Answered: It was determined that [H+] was 0.00628…

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter3: Chemical Reactions

Section3.4: Aqueous Solutions

Problem 3RC

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It was determined that [H+] was 0.00628 M in an initially 0.627 M solution of H A. What is the new [H A] with the correct number of significant figures?

Expert Solution

Step 1

The dissociation of HA is as follow

$H A \to H^{+} + A^{-}$

Since ,on dissociation of 1 mole of HA , 1 mole of H⁺ is formed.

Therefore,

Concentration of HA i.e. [HA] is equal to the concentration of H⁺ i.e. [H⁺]

Given that

[H⁺] = 0.00628 M

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