Chemistry College

Sulfurous acid ( H2SO3) is a diprotic acid with a1=1.39×10−2 and a2=6.73×10−8.
Determine the pH of a 0.189M sulfurous acid ( H2SO3 ) solution.

Answers

Answer 1

A sulfuric acid solution with a concentration of 0.189M has a pH of roughly 0.778.

Sulfuric acid: Is it a diprotic acid?

A diprotic acid is sulfuric acid, Sulfurous acid. The findings of an acid-base titration can be used to calculate the values of Ka1 and Ka2. To completely neutralise diprotic acids, two hydroxide ions are needed for each molecule. Sulfuric acid, a stronger acid than Hydrogen sulfide, with a pH of 1.5 in a solution of 0.100 mol dm³.

The chemical equation for sulfuric acid dissociation is as follows:

Sulfuric acid + Water ⇌ Hydronium ion + hydrosulfite anion

Write the expression for the acid dissociation constant (Ka1) for the first dissociation:

Ka1 = [Hydronium ion[hydrosulfite anion]/[Sulfuric acid]

Substitute the given value of Ka1 (1.39×10−2) and the initial concentration of Sulfuric acid (0.189 M) into the expression for Ka1 and solve for [hydronium ion]:

1.39×10−2 = [hydronium ion][Hydrogen sulfite]/0.189

[hydronium ion] = 0.167 M

pH = -log[hydronium ion]

pH = -log(0.167)

pH = 0.778

To know more about concentration visit:-

https://brainly.com/question/10725862

#SPJ1

Related Questions

Other Questions
a magazine that targets specific industries is called a(n) _____ publication. the concept of having multiple layers of security policies and practices is known as: cybersecurity culture multifactor authentication defense in depth biometrics The salaries of six bank employees are $37,000, $38,500, $35,000, $37,000, $45,000, $40,000, and $75,000.Which statement is true?Question 1 options:Both the median and mode are appropriate measures of center.The mean, median, and mode are all appropriate measures of center.Both the mean and median are appropriate measures of center.The median is the only appropriate measure of center. I need help with a college assignment I dont have time to do it and its reading a short essay and answering some questions if you could take the time to help it would be very much appreciated the future value of an ordinary annuity table is used when calculating multiple choice question. the present value of a series of payments. the present value of a single amount. the future value of a series of payments. ___________ occurs when a supervisor earns less than his or her subordinatesa) Role conflictb) Role ambiguityc) status incongruenced) informal status This piece is in a ____________ key. Hint: read the description of the major and minor scales.majordissonantminorconsonant a group of people who dance, sing, and comment on the actions of the play what is the 4th term/number of (a+b)^9, pascals triangle? In order, the four stages of knowledge attainment an individual must pass through to achieve expertise are: novice, initiate, apprentice, journeymana falseb true do you believe the cost of equity you calculated is a reasonable measure of the risk in your high income country? Use two methods including formula and various Excel functions to solve the following problem:Calculate the duration for a $1000, 4-year bond with a 6% annual coupon, currently selling at par. Use the duration to estimate the percentage change in the bonds price for a decrease in the market interest rate to 4%. Use the bond price volatility equation to compute the bond price volatility. Compare the result with the estimated percentage change in the bond price. . if a mutation occurs such that several of the tyrosines on rtk cannot be phosphorylated, will rtk dimerize? 2. Which sequence of transformations takes the graph of y = k(x) to the graph of y=-k(x + 1)? A. Translate 1 to the right, reflect over the x-axis, then scale vertically by a factor of 1/2B. Translate 1 to the left, scale vertically by 1/2 , then reflect over the y-axis. C. Translate left by 1/2, then translate up 1. D. Scale vertically by 1/2, reflect over the x-axis, then translate up 1. how long will it take for vermont to double its economy if it maintains this growth rate? give your answer to two decimals. McMillin Industries is currently 100% equity financed, has 25,000 shares outstanding at a price of $30 a share, and produces an annual EBIT of $150,000. The firm is considering issuing $300,000 of debt and repurchasing shares. The cost of debt is 12%. Ignore taxes. By how much will EPS change if the company issues the debt and EBIT remains constant?A) $.72 B) $.76 C) $1.72 D) $1.60 E) $1.54 business firms that compete with each other not only in one business unit, but in a number of related business units are said to be engaging in Consider a circle whose equation is x2 + y2 2x 8 = 0. Which statements are true? Select three options. The radius of the circle is 3 units. The center of the circle lies on the x-axis. The center of the circle lies on the y-axis. The standard form of the equation is (x 1) + y = 3. The radius of this circle is the same as the radius of the circle whose equation is x + y = 9. what drug can be used to control ventricular rate in a patient with atrial fibrillation naplex Hahn Manufacturing is expected to pay a dividend of $1.00 per share at the end of this year. The stock currently sells for $45 per share, and its required rate of return is 11%. The dividend is expect to grow at a constant rate, g, forever. What is Hahn's expected growth rate?a. 8.50%b. 9.50%c.10.00%d. 8.00%e.9.00%