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Calculate the pH for each of the following cases in the titration of 50.0 mL of...

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Chemistry

Calculate the pH for each of the following cases in thetitration of 50.0 mL of 0.210 M HClO(aq) with 0.210 M KOH(aq).

(a) before addition of any KOH

(b) after addition of 25.0 mL of KOH

(c) after addition of 30.0 mL of KOH

(d) after addition of 50.0 mL of KOH

(e) after addition of 60.0 mL of KOH

Answer & Explanation Solved by verified expert
3.8 Ratings (345 Votes)
a only HClO is present we know that HClO is a weak acid and for weak acids H sqrt Ka x C so H sqrt 29512 x 108 x 021 H 7872 x 105 now pH log H so pH log 7872 x 105 pH 4104 b now moles molarity x volume L so moles of HClO 021 x 50 x 103 105 x 103 moles of KOH 021 x 25 x 103 525 x 103 now the reaction HClO KOH KClO H20 we can see that moles of HClO reacted moles of KOH added 525 x 103 so moles of HClO left 105 x 103 525 x 103 525 x 103    See Answer
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