Consider these three titrations: (i) the titration of 25.0 mL of a 0.100 M monop

Question

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 statement is most likely to be true?

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

All three titrations have the same initial pH.

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

Explanation / Answer

answer:

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

reason

i) No of mol of all the ACIDs = 25/1000*0.1 = 0.0025 mol

to reach the first equivalence point all the acids requires

same no of mol of NaOH. as the concentration of base is same , the volume of base

required to reach first equivalence point is same.

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