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Consider the titration of a 25.0 −mL sample of 0.180 M CH3NH2 with 0.150 M HBr....

Consider the titration of a 25.0 −mL sample of 0.180 M CH3NH2 with 0.150 M HBr. Determine each of the following:

a) the initial pH

b) the volume of added acid required to reach the equivalence point

c) the pH at 4.0 mL of added acid

d) the pH at one-half of the equivalence point

e) the pH at the equivalence point

f) the pH after adding 4.0 mLof acid beyond the equivalence point

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