Chemistry High School

Calculate the concentration of all species in a 0.140 M solution of H2CO3.
The species are H2CO3,HCO3-, CO3^2-, H30,OH.
Can anyone help show me how to solve this? There are a couple up already, but they are not correct. Please help me out.

Answers

Answer 1

The concentration of the species in a 0.140 M solution of H₂CO₃ is given by:

[H₂CO₃] = 0.140 M, [HCO₃⁻] = 1.45×10^−7 M, [CO₃²⁻] = 1.45×10^−10 M, [H₃O⁺] = 4.5×10^−4 M, [OH⁻] = 2.2×10^−11 M.

Carbonic acid is a diprotic acid, which means that it has two acid dissociation constants. The first step is for the acid to donate a proton to form bicarbonate, and the second step is for the acid to donate another proton to form carbonate. H₂CO₃(aq) + H₂O(l) ⇌ H₃O⁺(aq) + HCO₃⁻(aq) Ka₁ = 4.3×10−7

HCO₃⁻(aq) + H₂O(l) ⇌ H₃O⁺(aq) + CO₃²⁻(aq) Ka₂ = 4.7×10−11

The formula for the concentrations of the species present in the solution is as follows:

[H₂CO₃] = 0.140 M

[HCO₃⁻] = Ka₁

[H₂CO₃]/[H₃O⁺] = 1.45×10^−7 M

[CO₃²⁻] = Ka₂[HCO₃⁻]/[H₃O⁺]

= 1.45×10^−10 M

[H₃O⁺] = Ka₁[H₂CO₃]/[HCO₃⁻]

= 4.5×10^−4 M

[OH⁻] = Kw/[H₃O⁺] = 2.2×10^−11 M, where Kw is the ion product constant for water.

Learn more about diprotic acid here:

https://brainly.com/question/29068526

#SPJ11

Related Questions

Other Questions
Studies of public opinion suggest that for the majority of Americans, ideologya. influences basic attitudes but not choices of candidates.b. is quite important in making political judgments.c. is not very important.d. is determined by social class.e. overrides political party affiliation. 1: Alex, suggested an alternative method where they allocate overhead costs as a function of transactions. Based on the data provided in Exhibit 3, and the suggestion to "allocate overhead costs as a function of transactions related to each overheadcost," what is the cost of Receiving per transaction?Please only provide a number and round to the second decimal. e.g. $5.6836/Direct Labor Hour should just be 5.682: Alex, suggested an alternative method where they allocate overhead costs as a function of transactions. They could then allocate costs unrelated to transactions like Engineering based on the engineering workload, and maintenance and depreciation based on machine hours. Based on the data provided in Exhibit 3, what is the cost of Maintenance and Depreciation per machine hour?Please only provide a number and round to the second decimal. e.g. $5.6836/Direct Labor Hour should just be 5.68 Currently, fossil fuels meet most of the energy needs of the United States. Research possible renewable energy sources, costs, and challenges for wide usage. Case to consider: Ice storms knocked out nearly half the wind-power generating capacity of Texas on Sunday as a rare deep freeze across the state locked up turbine towers in February 2021.Would any specific renewable source will dominate as fossil fuels do today? If your answer is yes, which type of energy would be? What are the advantages and disadvantages of this renewable energy? Are we ready to count on renewable energy now? Would you be willing to pay a possible high price for renewable energy now? Help me please :)Determinants of Interest Rates The real risk-free rate is \( 3 \% \). Inflation is expected to be \( 4 \% \) this year, \( 3 \% \) next year, and then \( 5.5 \% \) thereafter. The maturity risk premiu Calculate: e |$, (2 + 1) dz. Y $ (2+2)(2-1)dz. 17 dz|, y = {z: z = 2elt, t = [0,2m]}, = {z: z = 4e-it, t e [0,4]} In a laboratory experiment, the count of a certain bacteria doubles every hour. present midnighe a) At 1 p.m., there were 23 000 bacteria p How many bacteria will be present at r b) Can this model be used to determine the bacterial population at any time? Explain. 11. Guy purchased a rare stamp for $820 in 2001. If the value of the stamp increases by 10% per year, how much will the stamp be worth in 2010? Lesson 7.3 12. Toothpicks are used to make a sequence of stacked squares as shown. Determine a rule for calculating t the number of toothpicks needed for a stack of squares n high. Explain your reasoning. 16. Calc b) c) 17. As de: 64 re 7 S Based on the context clue in the sentence, adaptability means how well a person can . The sentence provides the of adaptability as a context clue. A person plans to invest a total of $110,000 in a money market account, a bond fund, an international stock fund, and a domestic stock fund. She wants 60% of her investment to be conservative (money market and bonds). She wants the amount in domestic stocks to be 4 times the amount in international stocks. Finally, she needs an annual return of $4,400. Assuming she gets annual returns of 2.5% on the money market account, 3.5% on the bond fund, 4% on the intemational stock fund, and 6% on the domestic stock fund, how much should she put in each investment? The amount that should be invested in the money market account is $ (Type a whole number.) to which element of the marketing mix is viral marketing most closely related? The math department is putting together an order for new calculators. The students are asked what model and color they prefer.Which statement about the students' preferences is true?A. More students prefer black calculators than silver calculators.B. More students prefer black Model 66 calculators than silver Model55 calculators.C. The fewest students prefer silver Model 77 calculators.D. More students prefer Model 55 calculators than Model 77calculators. Fields Enterprises has 70,000 ordinary shares outstanding. It declares a 1.5 per share cash dividend on November 1 to shareholders of record on December 1. The dividend is paid on December 31. 1. What are the accounts that will be used on the declaration date? 2. What are the accounts that will be used on the record date? 3. What are the accounts that will be used on the payment date? 4. Prepare the entries on the appropriate dates to record the declaration and payment of the cash dividend. Stephen runs a pet salon. He is currently grooming115dogs per week. If instead of grooming115dogs, he grooms116dogs, he will add$65.63to his costs and$67.52to his revenues. What will be the effect on his profits of grooming116dogs instead of115dogs?Stephen's profits will change by?$ srwe practice pt skills assessment (ptsa) - part 2 Zisk Company purchases direct materials on credit. Budgeted purchases are April, $93,000; May, $123,000; and June, $133,000. Cash payments for purchases are: 75% in the month of purchase and 25% in the first month after purchase. Purchases for March are $83.000. Prepare a schedule of cash payments for direct materials for April, May, and June. The relationship between the amount of money x that a small instrument manufacturer spends on advertising and the total sale is given by the function S(x) = -0.003x + 0.58x-200. Find the average rate of change expected in the sales when the amount spend on advertising increases from $50 to $100. a. 17.9 b. 34.5 c. 27.2 d. 44.1 e. None of the above For AirbnbExplain Porters Five Force Model - Apply the five forces model to your industryExplain VRIO framework and identify the competitive position held by your companyExplain the purpose of a SWOT analysis and provide one for your company Draw out the vertical value chain for your firms industryFinancials - Explain what you know about your company's financials. You may use the WU library database to find your company's financial informationCreate and explain a Financial Analysis for your company 22-7 (2)=-12 h) logx - 30 +2=0 log.x 4. The two major categories of the processes used by individuals for behavior change area. cognitive and physiologicalb. cognitive and behavioralc. social and physiologicald. behavioral and sociale. cognitive and social 13. A competitive profit-maximizing firm utilizes two inputs (x and x) to produce a single output (y): y = f(x, x). Such firm has profit function (p) that is convex on the output price (p). Discuss the intuition for this result: a. What does it mean in terms of the firm's ability to choose its inputs quantities (x and x)? b. What does it mean in terms of the firm's ability to choose its production level (y*)? (Hint: compare the graph of a convex profit function to a linear function) For a given country, the impact of expansionary monetary policy is . For a given country, the impact of expansionary monetary policy is .1. diminished if banks are not willing to extend loans to individuals and businesses2. enhanced if it leads to significant levels of inflation3. generally the same regardless of commercial banks lending policies