8. A saturated solution of Ag Croq has a silver-ion concentration of 1.3 x 10-4M. Which is the Ksp of Ag CrO 4?
O 1.3 x 10-4
O 3.9 x 10-12
O 6.5 x 10-5
O 1.1 x 10-12

Answers

Answer 1

Answer: The [tex]K_{sp}[/tex] of [tex]AgCrO_{4}[/tex] is [tex]1.1 \times 10^{-12}[/tex].

Explanation:

Given: [tex][Ag^{+}] = 1.3 \times 10^{-4} M[/tex]

The reaction equation will be written as follows.

[tex]Ag_{2}CrO_{4} \rightleftharpoons 2Ag^{+} + CrO^{2-}_{4}[/tex]

This shows that the concentration of [tex]CrO^{2-}_{4}[/tex] is half the concentration of [tex]Ag^{+}[/tex] ion. So,

[tex][CrO^{2-}_{4}] = \frac{1.3 \times 10^{-4}}{2}\\= 0.65 \times 10^{-4} M[/tex]

The expression for [tex]K_{sp}[/tex] of this reaction is as follows.

[tex]K_{sp} = [Ag^{+}]^{2}[CrO^{2-}_{4}][/tex]

Substitute values into the above expression as follows.

[tex]K_{sp} = [Ag^{+}]^{2}[CrO^{2-}_{4}]\\= (1.3 \times 10^{-4})^{2} \times 0.65 \times 10^{-4}\\= 1.1 \times 10^{-12}[/tex]

Thus, we can conclude that the [tex]K_{sp}[/tex] of [tex]AgCrO_{4}[/tex] is [tex]1.1 \times 10^{-12}[/tex].


Related Questions


A gamma wave has______
energy than a radio wave.

Answers

Answer:

A gamma wave has higher energy than a radio wave.

It is known that oxygen contains 1 percent of the air. If 50 liters of wind, how much oxygen is needed? *

Answers

Answer:

25 PRECENT

Explanation:

plant growth is chemical change or physical change




Answers

Answer:

its a chemical change.

hope it helps.

stay safe healthy and happy...

Answer: it is a chemical change because it involves chemical process

Explanation:

What are the basic elements of selection of proffesion?describe any two​

Answers

Answer:

overall I think one answer

Match the reaction to the type that best describes it.
2HCl → H2 + Cl2
?
Combination
NaF + KBr →
NaBr + KE
?
Decomposition
Mg + MnCl2 →
-Mn + MgCl2
?
Single replacement
2Na + 02 →
Na2O2
?
Double replacement

Answers

Answer:

2HCl → H2 + Cl2 = decomposition

NaF + KBr → NaBr + KF = double replacement

Mg + MnCl2 → Mn + MgCl2 = single replacement

2Na + 02 → Na2O2 = combination

Explanation:

A chemical reaction involves the conversion of one or more substances called REACTANTS into other substances called PRODUCTS. There are different types of reactions depending on how it occurs, they include:

- Combination or synthesis reaction is a type of reaction in which two or more elements combine to form a single product. Example is:

2Na + 02 → Na2O2

- Single replacement is a type of reaction where one element is replaced by another in a compound or molecule. Example below shows that Manganese (Mn) is replaced by magnesium (Mg):

Mg + MnCl2 → Mn + MgCl2

- Double replacement is a type of reaction where two elements are replaced by other elements at a time. Example is:

NaF + KBr → NaBr + KF

- Decomposition is a type of reaction in which one molecule or compound is broken down into two or more products. Example is:

2HCl → H2 + Cl2

A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next few minutes? Molecules in both the metal and the surrounding air will start moving at lower speeds. Molecules in both the metal and the surrounding air will start moving at higher speeds. The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up. The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down. Mark this and return

Answers

Cyndi hang Geld Robin

describe the formation of covalent bond in methane (5 marks) ​

Answers

Answer: Covalent bonding is when atoms of different elements  share electrons

Explanation: Taking Methane CH₄

it contains Hydrogen and Carbon atoms pairing electrons. the electronic configuration for carbon is 2,4 that is to say it has 4 electrons in its valence shell (outer shell) and hydrogen has 1 so carbon shares its four electrons with four hydrogen atoms thus forming a covalent bond. so they now have a stable arrangement of electrons in their outer shell ,thus giving CH₄

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, sharing of electron is the only basis for the formation of covalent bond in methane.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Carbon has an electrical configuration of 2,4. Hydrogen only has one electron in its valence shell, whereas carbon contains four electrons. In order to create methane, carbon forms a covalent connection with four hydrogen atoms, sharing its four electrons with them.

Therefore, sharing of electron is the only basis for the formation of covalent bond in methane.

To learn more about chemical compound, here:

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HELP ASAP Choose three sections of the electromagnetic spectrum. Rank them in order of energy. Give an example of how they are used for each.

Answers

Isn’t Bambi undo hall

5.34x10 to the 27th power molecules of sulfur hexafluoride to moles of sulfur hexafluoride

Answers

Answer:

8.87 × 10³ moles.

Explanation:

To convert number of molecules of sulfur hexafluoride (SF6) to moles (n), we divide by Avogadro's number (6.02 × 10²³)

That is; n = N ÷ nA

According to the question, 5.34 x 10^27 molecules of SF6 was given in this question. Hence, the number of moles it contains is given as:

n = 5.34 x 10^27 ÷ 6.02 × 10²³

n = 5.34/6.02 × 10^ (27-23)

n = 0.887 × 10⁴

n = 8.87 × 10³ moles.

ASAP :))
How would a reaction that occurs without the addition of energy be
described?
A. At equilibrium
B. Spontaneous
C. Nonspontaneous
D. Not at equilibrium

Answers

Answer:

B

Explanation:

Exergonic reactions are also called spontaneous reactions, because they can occur without the addition of energy. ... In this case, the products, or final state, have more free energy than the reactants, or initial state. Endergonic reactions are non-spontaneous, meaning that energy must be added before they can proceed.

Exergonic reactions were often known as spontaneous reaction. since they can take place without the expenditure of energy.

What is exergonic reactions?

A reaction wherein energy is emitted mostly in presence of light or heat was known as just an exothermic reaction.

What is spontaneous reaction?

A spontaneous process would be one that happens without the system receiving any outside input.

Because exergonic events could proceed without the supply of energy, they are sometimes known as spontaneous reactions. The products possess greater free energy as compared to  the reactants example. Endergonic reactions were non-spontaneous, which means they require the addition of energy before they can begin.

To know more about spontaneous reactions and exergonic reactions

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How do you think the bonds between carbon atoms might be different in diamond and graphite?

Answers

Both have Giant Covalent Structures, resulting in very high melting temperatures. However each carbon atom in Diamond has 4 covalent bonds with other Carbons, making it extremely strong and hard. On the other hand, each carbon in graphite is bonded to three carbons, and therefore graphite is formed in layers.

how does liquid carbon dioxide connect to organic chemistry
please I need long answers

Answers

Carbon dioxide can’t exist in three states; Gas, Liquid & Solid. At normal temperatures and pressures, CO2 is colorless with a slightly pungent odor at high concentrations. If compressed and cooled to proper temperature the gas liquifies. Solid CO2, (dry ice) sublimates back to the natural gaseous state.

convert 300g into kg​

Answers

Answer:

0.3kg

Explanation:

The nonmetals include which of the following groups? Use the periodic table to answer the question. Check all that apply.

halogens

alkali metals

lanthanides

noble gases

alkaline earth metals

Answers

Answer:

En el grupo de los no metales se incluyen los halógenos​ (flúor, cloro, bromo, yodo, astato y téneso), que tienen 7 electrones en su última capa de valencia y los gases nobles (helio, neón, argón, kriptón, xenón, radón), que tienen 8 electrones en su última capa (excepto el helio, que tiene 2).

Explanation:

halógenos

Answer:

1,4

Explanation:

The general shape that an electron is located within an energy level_____

Answers

Answer:

valence

Explanation:

the level of energy electrons have within a general shape the energy level is valence.

¿Cuántos ml de alcohol contiene una lata de cerveza de 375 ml si tiene una concentración 4% v/v?

Answers

Answer:

15 mL

Explanation:

El valor de concentración de 4% v/v nos dice que de cada 100 mL de cerveza, 4 mL son de alcohol.

Con eso en mente podemos calcular los mL de alcohol presentes en 375 mL, de la siguiente forma:

375 mL * 4/100 = 15 mL

En 375 mL de cerveza de concentración 4% v/v, hay 15 mL de alcohol.

một oxit của photpho có thành phần trăm của P bằng 43,66% . Biết phân tử khối của Axit bằng 142đvC. Công thức hóa học của Axit là ?

Answers

Answer:

câu trả lời trong hình ảnh

in heating a kettle of water on an electric stove, 3.34×10^3 J of thermal energy was provided by the element of the stove. yet, the water in the kettle gained only 5.95×10^2 J of thermal energy. determine the percent efficiency of the electrical element in heating the kettle of water​

Answers

Answer:

The percentage efficiency of the electrical element is approximately 82.186%

Explanation:

The given parameters are;

The thermal energy provided by the stove element, [tex]H_{supplied}[/tex] = 3.34 × 10³ J

The amount thermal energy gained by the kettle, [tex]H_{absorbed}[/tex]  = 5.95 × 10² J

The percentage efficiency of the electrical element in heating the kettle of water, η%, is given as follows;

[tex]\eta \% = \dfrac{H_{supplied} - H_{absorbed} }{H_{supplied}} \times 100[/tex]

Therefore, we get;

[tex]\eta \% = \dfrac{3.34 \times 10^3 - 5.95 \times 10^2}{3.34 \times 10^3} \times 100 = \dfrac{549}{668} \times 100 \approx 82.186 \%[/tex]

The percentage efficiency of the electrical element, η% ≈ 82.186%.

What is the net ionic equation for the following? :)
1. Mg (s) + Na2CrO4 (aq) -->

2. K (s) + Cd(NO3)2 (aq) -->

Answers

Answer:

1. Mg (s) + 2Na+(aq) → 2Na(s) + Mg²⁺(aq)

2. 2K(s) + Cd²⁺(aq) → 2K⁺(aq) + Cd(s)

Explanation:

The net ionic equation of a reaction express only the chemical species that are involved in the reaction:

1. Mg (s) + Na2CrO4 (aq) → 2Na + MgCrO4(aq)

The ionic equation:

Mg (s) + 2Na+(aq) + CrO4²⁻ (aq) → 2Na + Mg²⁺ + CrO4²⁻(aq)

Subtracting the ions that don't change:

Mg (s) + 2Na+(aq) → 2Na + Mg²⁺

2. 2K(s) + Cd(NO3)2(aq) → 2KNO3(aq) + Cd(s)

The ionic equation:

2K(s) + Cd²⁺(aq) + 2NO3⁻(aq) → 2K⁺(aq) + 2NO3⁻(aq) + Cd(s)

Subtracting the ions that don't change:

2K(s) + Cd²⁺(aq) → 2K⁺(aq) + Cd(s)

i need to know soon. HELP
PLEASE

Answers

Answer:

D..

carbonate and sulphate

How many moles of carbon are in the sample?

Answers

Answer:

12.01 grams per mole

Explanation:

theres no sample or example so if theres grams of Carbon, convert it to moles using 12.01g/mol

.......................

Answers

...

....................................

How many molecular of H2O and O2 are present in 8.5g of H2O2 ?​

Answers

2H2O+O2--->2H2O2  

8.5 gm H2O2=0.25 mole  

hence H2O is also 0.25 mole i.e.4.5 gm  

O2is 0.125 mole i.e.4 gm

In the experiment "Beer-Lambert’s Law and Spectrophotometry", you prepared a calibration plot similar to the one pictured below. What is the approximate concentration of a solution whose absorbance is 0.35?

Answers

Answer:

0.025M

Explanation:

As you must see in your graph, each concentration of the experiment has an absorbance. Following the Beer-Lambert's law that states "The absorbance of a solution is directely proportional to its concentration".

At 0.35 of absorbance, the plot has a concentration of:

0.025M

What pollutants can contribute to acid precipitation and how are these pollutants generated?

Answers

Answer:

I don't know I don't know about question but I can try to find it

Explanation:

I don't know about question but I can try to find it

What is the name of the process manufacturers use to make unsaturated fatty acids more solid at room temperature and prevent oxidation.

Answers

Answer:

Hydrogenation

Explanation:

Look up the definition to confirm

1. Which of the following species exhibit tetrahedral geometry?
a. CCl4 b. PCI5 c. NH3 d. CO2

2. Which statement correctly describes the Valence Shell Electron Pair Repulsion (VSEPR) Theory? The valence electron pairs are__________.
a. The valence electron pairs are given by the group number in the periodic table.
b. The valence electron pairs are the outermost electrons of the atom that areinvolved in the bonding.
c. The valence electron pairs repel one another and tend to stay as far apart aspossible.
d. The valence electron pairs are the lone pairs of the atom.

3. Which of the following statements about resonance is TRUE?

I. Resonance hybrids occur because a compound changes back and forth between two or more resonancestructures
II. Resonance structures differ in the arrangement of electrons but not in the arrangement of atoms.
III. Resonance hybrids contain delocalized electrons.
IV. Resonance structures for a given compound always contribute equally to the resonance hybrid.
V. Resonance structures occur when there are two or more valid Lewis structures for a given compound.
VI. Resonance hybrids are a composite of resonance structures.

a.I, II, V, VI
b. II, III, IV, VI
c. II, III, V, VI
d. II, IV, V, VI

4. How many resonance forms will nitrate ion (NO3) have?
a. - 1 b. 1 c. 2 d. 3

5. What is the first noble gas?
a. Xenon b. Radon c. Helium d. Krypton

6. What is the principle used for filling of atomic orbitals?
a. Azimithual Principle
b. Hund's Principle
c. Pauling's Exclusion Principle
d. Aufbau Principle

7. How many electrons can "m" shell accommodate?
a. 16 b. 17 c. 18 d. 19

8. What number of shells used for the accommodation of electrons in an atom? a. one b. two c. three d. four

9. What distribution does the electron configuration describe?
a. protons
b. neutrons
c. electrons
d. ions

10. How many total electrons can the "p" orbitals hold?
a. 3 b. 1 c. 7 d. 6

11. Who are the founding fathers of Quantum Mechanics?
a. Werner Karl Heisenberg
b. Isaac Newton
c. Erwin Schrodinger
d. a and c

12. There are _types of quantum numbers.
a. 2 b. 4 c. 5 d. 7

13. Which of the following elements can only form one bond in a Lewis structure? a. H b. O c. Al d. N

14. Which rule states that electron will go into empty orbitals of the same energy before entering into an orbital with an electron present?
a. Hand's rule
b. Hund's rule
c. Pauli Exclusion Principle
d. Aufbau Principle

15. What is the definition of diamagnetic atom?
a. An atom where all of the electrons are paired
b. An atom where some of the electrons are paired.
c. An atom where none of the electrons are paired.
d. An atom attracted to a magnetic field.​

Answers

Answer:

a

Explanation:

Its because ammonium has thee hydrogen atoms

Help me please I need this quickly

Answers

9. melting point

10. balloons float because they are filled with hydrogen, a gas which is less dense than air.

11. specific gravity

12. element

13. mixture

14. sodium and chlorine

15. cutting of paper

16. condensation

17. 1 and 3

18. heat energy is released

I’ll mark you as brainlister

Answers

It should be dependent

El fluoruro de hidrógeno HF que se utiliza en
la obtención de los freones (los cuales
destruyen la capa de ozono de la
estratosfera), se prepara mediante la
siguiente reacción: CaF2 + H2SO4
CaSO4 + 2HF Si se hacen reaccionar 50gr
de CaF2 con 100 gr de H2SO4 (masas
atómicas Ca=40,F=19, H=1, S=32, O=16)

Answers

Answer:

25.6g de HF son producidos

Explanation:

...¿Cuánto HF es producido?

Para resolver este problema debemos convertir la masa de cada reactivo a moles usando su masa molar. Como la reacción es 1:1, el reactivo con menor número de moles es el reactivo limitante. Con las moles del reactivo limitante podemos obtener las moles de HF y su masa así:

Moles CaF2:

Masa molar:

1Ca = 40g/mol

2F = 19*2 = 38g/mol

40+38 = 78g/mol

50g CaF2 * (1mol/78g) = 0.641 moles CaF2

Moles H2SO4:

Masa molar:

2H = 2g/mol

1S = 32g/mol

4O = 64g/mol

98g/mol

100g H2SO4 * (1mol / 98g) = 1.02 moles H2SO4

Como las moles de CaF2 < Moles H2SO4: CaF2 es reactivo limitante.

Moles HF usando la reacción:

0.641 moles CaF2 * (2mol HF / 1mol CaF2) = 1.282 moles HF

Masa HF:

Masa molar:

1g/mol + 19g/mol = 20g/mol

1.282 moles HF * (20g/mol) =

25.6g de HF son producidos
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