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In the titration of 25 mL of 0.100 M N2H2 (Kb=8.9x10-7) with .100M HCl, determine the...

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Chemistry

In the titration of 25 mL of 0.100 M N2H2 (Kb=8.9x10-7) with.100M HCl, determine the pH at: Please show all steps/ Help pleaseasap

a) the begining of titration

b) after 15 mL of acid has been added

c) after 25 mL of acid has been added

d) after 30 mL of acid has been added

Answer & Explanation Solved by verified expert
4.1 Ratings (539 Votes)
Answer We are given 250 mL of 0100 M N2H2 Kb 89107 a the begining of titration we need to put ICE chart N2H2 H2O N2H3 OH I 0100 0 0 C x x x E 0100x x x We know Kb for N2H2 89 107 Kb N2H3 OH N2H2 89 107 x x 0100x The x in the 0100x can be neglected because Kb value is too small 89 107 0100 x2 x2 89108 x 298104 M x OH 298104 M pOH log OH log 298104 M 352 pH 14    See Answer
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