Please help me out! Especially part 4! Thank you! Consider the titration of 100.0 mL of...

Question

Question

Please help me out! Especially part 4! Thank you!

Consider the titration of 100.0 mL of 0.100 M HCN by 0.100 M KOH at 25°C.
K_a for HCN = 6.2×10^-10.

Part 1
Calculate the pH after 0.0 mL of KOH has been added.

pH =

Part 2
Calculate the pH after 50.0 mL of KOH has been added.

pH =

Part 3
Calculate the pH after 75.0 mL of KOH has been added.

pH =

Part 4
Calculate the pH at the equivalence point.

pH =

Part 5
Calculate the pH after 125 mL of KOH has been added.

pH =

science chemistry

Answer 1

Answer #1

Answer 2

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