Question

A 100 mL buffer solution containing 0.0500 M H2SO3 and 0.100 M Na2SO3 will be titrated with 0.100 M NaOH. a) Calculate the initial pH of this solution. b) What is the pH of the solution at the first end point? c) Find out the pH at the second end point. d) Suggest one indicator for each of the end points. What will be the color changes at these end points? For H2SO3: Ka1 = 1.23 x 10^2 Ka2 = 6.6 x 10^8

Name: a 100 ml buffer solution containing 00500 m h2so3 and 0100 m naiiso3 will be titrated with 0100 m naoh a calculate the initial ph of this solution b what is the ph of the solution at the fir 45087
Uploaded: 2022-01-13T16:23:52-08:00
Duration: 3 min 33 s
Channel: Dinesh Singh
Description: a 100 ml buffer solution containing 00500 m h2so3 and 0100 m naiiso3 will be titrated with 0100 m naoh a calculate the initial ph of this solution b what is the ph of the solution at the fir 45087

          A 100 mL buffer solution containing 0.0500 M H2SO3 and 0.100 M Na2SO3 will be titrated with 0.100 M NaOH.

a) Calculate the initial pH of this solution.
b) What is the pH of the solution at the first end point?
c) Find out the pH at the second end point.
d) Suggest one indicator for each of the end points. What will be the color changes at these end points?

For H2SO3:
Ka1 = 1.23 x 10^2
Ka2 = 6.6 x 10^8

Added by Anna M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Dinesh Singh

01/13/2022

Step 1

Given that pKa for H2SO3 is 1.89, [A-] = 0.1 M, and [HA] = 0.05 M, we can plug in these values to get: pH = 1.89 + log(0.1/0.05) pH = 1.89 + log(2) pH = 1.89 + 0.3010 pH = 2.1910 Show more…

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A 100 mL buffer solution containing 0.0500 M H2SO3 and 0.100 M Na2SO3 will be titrated with 0.100 M NaOH. a) Calculate the initial pH of this solution. b) What is the pH of the solution at the first end point? c) Find out the pH at the second end point. d) Suggest one indicator for each of the end points. What will be the color changes at these end points? For H2SO3: Ka1 = 1.23 x 10^2 Ka2 = 6.6 x 10^8