How will the amount of the unionized acid HA be affected (increased, decreased, unaffected can’t predict) for the weak acid, HA.   HA + H2O       <--->       H3O+   +   A-     If the following changes are made: The solution is diluted with water         A strong acid like HCl is added to the solution         The soluble ionic salt, NaA, is added to the solution         A strong soluble base such as NaOH is added to the solution         What is the effect on the Ka for the weak acid, HA in question 3 if: The solution is diluted with water         The soluble ionic salt, NaA is added to the solution           A 0.2 M solution of the weak acid, HA, has a pH of 4.24   HA    +    H2O                     H3O+   +   A-   What is the [H3O+] of the solution     Calculate the Ka for the weak acid               Calculate the % ionization for the acid

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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  1. How will the amount of the unionized acid HA be affected (increased, decreased, unaffected can’t predict) for the weak acid, HA.

 

HA + H2O       <--->       H3O+   +   A-

 

 

If the following changes are made:

  1. The solution is diluted with water

 

 

 

 

  1. A strong acid like HCl is added to the solution

 

 

 

 

  1. The soluble ionic salt, NaA, is added to the solution

 

 

 

 

  1. A strong soluble base such as NaOH is added to the solution

 

 

 

 

  1. What is the effect on the Ka for the weak acid, HA in question 3 if:
    1. The solution is diluted with water

 

 

 

 

  1. The soluble ionic salt, NaA is added to the solution

 

 

 

 

 

  1. A 0.2 M solution of the weak acid, HA, has a pH of 4.24

 

HA    +    H2O                     H3O+   +   A-

 

  1. What is the [H3O+] of the solution

 

 

  1. Calculate the Ka for the weak acid

 

 

 

 

 

 

 

  1. Calculate the % ionization for the acid

 

 

 

 

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