Chemistry College

Use the Ka values for weak acids to identify the best components for preparing buffer solutions with the given pH values.

Name Formula Ka
Phosphoric acid H3PO4 7.5 x 10^-3
Acetic acid CH3COOH 1.8 x 10^-5
Formic acid HCOOH 1.8 x 10^-4

pH 1.9 =_________
pH 5.0 = ________
pH 3.9= ________

Answers

Answer 1

Answer:

pH= 1.9 then [tex]H_{3} PO_{4}[/tex]

pH = 5.0 , [tex]CH_{3} COOH[/tex]

pH = 3.9 , HCOOH

As we know range left [tex]pH= pKa+/- 1[/tex]

Related Questions

Hypercalcemia sign and symptoms severe symptoms

Answers

Answer:

Hypercalcemia can cause stomach upset, nausea, vomiting and constipation. Bones and muscles. In most cases, the excess calcium in your blood was leached from your bones, which weakens them. This can cause bone pain and muscle weakness.

Some symptoms are:

Fatigue, bone pain, headaches.

Nausea, vomiting, constipation, decrease in appetite.

Forgetfulness.

Lethargy, depression, memory loss or irritability.

Muscle aches, weakness, cramping and/or twitches.

When a marble is dropped into a beamer of water

Answers

Answer:

The water will rise.

Explanation:

hope this helps you

-Sweety<3

The mass of the marble is greater than that of the water. The marble weighs more than an equivalent volume of the water. The force from dropping the marble breaks the surface tension of the water. The marble has greater mass and volume than the water.

cuales son las caracteristicas de el livermorio

Answers

Answer:

Livermorium is a radioactive, artificially produced element about which little is known. It is expected to be a solid and classified as a metal. It is a member of the chalcogen group. Livermorium has four isotopes with known half-lives, all of which decay through alpha decay

Write balanced equations for the reaction of each of the following carboxylic acids with NaOH. Part A formic acid Express your answer as a chemical equation. A chemical reaction does not occur for this question. Request Answer Part B 3-chloropropanoic acid Express your answer as a chemical equation. nothing A chemical reaction does not occur for this question.

Answers

Answer:

Part A

HCOOH(aq) + NaOH(aq) → HCOONa(aq) + H2O(l)

Part B

ClCH2CH2CO2H(aq) + NaOH(aq) ------> ClCH2CH2CO2Na(aq) + H2O(l)

Explanation:

The reaction between an alkanoic acid and a base is a neutralization reaction. The reaction occurs as follows;

RCOOH + NaOH ----> RCOONa + H2O

We have to note the fact that the net ionic reaction still remains;

H^+(aq) + OH^-(aq) ---> H2O(l)

In both cases, the reaction can occur and they actually do occur as written.

Other Questions
Yooooo HELPPPwith this question plz 1 =1 ? herty rta4356gb? is g sdfgbns iesx? If a $6 per unit tax is introduced in this market, then the new equilibrium quantity will be If you help me, you will get this cookie what do you think is the main idea of the essay explicit or implicit? When a marble is dropped into a beamer of water Write the relation of M3 with its multiples give a short introduction of carl von linnaues and rh whittakers regarding classification of living beings one major point Tangerine, Inc. provides the following data: Surround, Inc. Comparative Balance Sheet Dec. 31, 20X9 Assets Current Assets: Cash and Cash Equivalents $29,000 Account Receivable, Net 31,000 Merchandise Inventory 53,000 Total Current Assets $113,000 Property, Plant, and Equipment, Net 120,000 Total Assets $233,000 Liabilities Current Liabilities: Accounts Payable $4000 Notes Payable 3000 Total Current Liabilities $7000 Long-term Liabilities 84,000 Total Liabilities $91,000 Stockholders' Equity Common Stock $30,000 Retained Earnings 112,000 Total Stockholders' Equity $142,000 Total Liabilities and Stockholders' Equity $233,000 Calculate the debt to equity ratio. find x 2 ^30 divided by 8^9= 2x The point slope formula (if possible) to write an equation of the line given the following informationwe The question 4 down , can you help me guys? Question 7 of 20The Supreme Court has recently ruled that a federal lawoutlawing the burning of the American flag in protestviolates the First Amendment's guarantee of free speech.The Court delivered a split decision, with five justicesvoting to overturn the law and four voting to uphold it.How could one of the major organizations within the federal governmentmost effectively overcome the Supreme Court's ruling to allow the federalgovernment to outlaw flag burning?A. Federal district and appellate judges could refuse to follow theSupreme Court's precedent.B. The federal bureaucracy could refuse to comply with the SupremeCourt's orders.C. Congress could propose a constitutional amendment that wouldoutlaw flag burning.D. The president could vold the Supreme Court's ruling using her vetopower.SUBMIT please help !!!! i would really appreciate it Features of stratification in Nigeria sociology a person lifts 60kg on the surface of the earth, how much mass can he lift on the surface of the moon if he applies same magnitude of force Hi! Question 2-10 Between which two numbers does 46 lie? A. between 8 and 9 B. between 6 and 7 C. between 5 and 6 D. between 7 and 8 The potential difference between the plates of a capacitor is 234 V. Midway between the plates, a proton and an electron are released. The electron is released from rest. The proton is projected perpendicularly toward the negative plate with an initial speed. The proton strikes the negative plate at the same instant the electron strikes the positive plate. Ignore the attraction between the two particles, and find the initial speed of the proton.I have tried looking at the cramster.com solution manual and do not like the way it is explained. Simply put, I cannot follow what is going on and I am looking for someone who can explain it in plain man's terms and help me understand and get the correct answer. I am willing to give MAX karma points to anyone who can help me through this. Thank you kindly. 1. How much heat energy ( Q ) is required to heat 2.0 kg of copper from 30.0 oC to 80.0 oC?