Consider these three titrations: (i) The titration of 25.0 mL of a 0.100 M monoprotic weak acid

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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?

(a) All three titrations have the same initial pH.

(b) All three titrations have the same pH at their first equivalence points.

(c) All three titrations require the same volume of NaOH to reach their first equivalence points.

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