Calculate the pH at the equivalence point for titrating 0.160 M solutions of eac

ID: 483356 • Letter: C

Question

Calculate the pH at the equivalence point for titrating 0.160 M solutions of each of the following bases with 0.160 M HBr.

Part A

sodium hydroxide (NaOH)

Express your answer using two decimal places.

Part B

hydroxylamine (NH2OH)

Express your answer using two decimal places.

Part C

aniline (C6H5NH2)

Express your answer using two decimal places.

Calculate the pH at the equivalence point for titrating 0.160 M solutions of each of the following bases with 0.160 M HBr.

Part A

sodium hydroxide (NaOH)

Express your answer using two decimal places.

pH=

Part B

hydroxylamine (NH2OH)

Express your answer using two decimal places.

pH=

Part C

aniline (C6H5NH2)

Express your answer using two decimal places.

pH=

part A) 0.16M NaOH with 0.16M HBr

NaOH is a strong base and HBr is a strong acid and their concentrations are same so at equivalance point pH=7.0

part B) 0.16M NH2OH and 0.16M HBr

NH2OH is a weak base and HBr is astrong acid

evenn their concentratrions are same but at equivalance point the solution is acidic so the pH should be <7.0

part C) aniline is also a weak base so here the pH at equivalant point shoud be <7.0