Question 2 (0.5 points) When 30.0 mL of an unknown acid was titrated with 0.359

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Question 2 (0.5 points) When 30.0 mL of an unknown acid was titrated with 0.359 M NaOH, 32.5 mL of the base was required to reach the equivalence point. What was the concentration of the acid? Please include units in your answer. Your Answer: units Answer Save Question 3 (0.25 points) When a strong base is titrated with a strong acid, the equivalence point will have O a pH 7. O a pH 7. O a pH 7. Save Question 4 (0.5 points) A 0.137 M weak acid has an initial pH of 2.61. What is the Ka of the acid? Do not use the "x is small" approximation in your calculation. Report your answer in decimal form. Your Answer:

Explanation / Answer

2.

At equivalence point of titration

Equivalent of unknown acid=equivalent of NaOH

30×M=32.5×0.359

M=0.3889 molar

3. For equivalence point of strong acid base titration the solution would have pH=7

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