Problem: Consider these three titrations: (i) the titration of 25.0 mL of a 0.100 M monoprotic weak acid with 0.100 M NaOH (ii) the titration of 25.0 mL of a 0.100 M diprotic weak acid with 0.100 M NaOH (iii) the titration of 25.0 mL of a 0.100 M strong acid with 0.100 M NaOH Which of the following statements is true? All three titrations have the same pH at their first equivalence point.All three titrations require the same volume of NaOH to reach their first equivalence point. All three titrations have the same the initial pH. 

🤓 Based on our data, we think this question is relevant for Professor Bertrand's class at UCSD.

FREE Expert Solution
FREE Expert Solution

We will examine each statement one by one and check the given titration conditions if the statement matches. 

1) All three titrations have the same pH at their first equivalence point. 

If we look at the information given we can see that we have the same concentrations and the same volumes but different strengths and types of acid.

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Problem Details

Consider these three titrations: 

(i) the titration of 25.0 mL of a 0.100 M monoprotic weak acid with 0.100 M NaOH 

(ii) the titration of 25.0 mL of a 0.100 M diprotic weak acid with 0.100 M NaOH 

(iii) the titration of 25.0 mL of a 0.100 M strong acid with 0.100 M NaOH 


Which of the following statements is true? 

All three titrations have the same pH at their first equivalence point.

All three titrations require the same volume of NaOH to reach their first equivalence point. 

All three titrations have the same the initial pH. 


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Our tutors have indicated that to solve this problem you will need to apply the Titrations of Diprotic and Polyprotic Acids concept. You can view video lessons to learn Titrations of Diprotic and Polyprotic Acids. Or if you need more Titrations of Diprotic and Polyprotic Acids practice, you can also practice Titrations of Diprotic and Polyprotic Acids practice problems.

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Based on our data, we think this problem is relevant for Professor Bertrand's class at UCSD.