Practice Calculating The Ph Of Polyprotic Acids (7.6.2)

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6 sample questions

Question 1.
What is a polyprotic acid?
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Think about how many protons an acid can donate.
Question 2.
Give an example of a diprotic acid.
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Consider well-known strong acids.
3Question 3.
What is a polyprotic acid?
- An acid that can donate one proton
- An acid that can donate two or more protons
- An acid that does not dissociate
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Think about how many protons a polyprotic acid can donate.
4Question 4.
True or False: The second dissociation of most weak polyprotic acids is significant for calculating pH.
- True
- False
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Consider which dissociation provides most H+ ions.
Question 5.
Calculate the pH of a 0.01 M solution of H₃PO₄ considering its first and second dissociation.
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Remember to include the original concentration changes for each successive Ka.
Question 6.
For a 0.2 M solution of sulfuric acid, discuss the step-by-step calculation of pH considering both dissociation steps.
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Find out how to factor in each dissociation's contributions together.

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