Consider the titration of a 23.0 −mL sample of 0.180 M CH3NH2
with 0.145 M HBr....
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Chemistry
Consider the titration of a 23.0 −mL sample of 0.180 M CH3NH2with 0.145 M HBr. Determine each of the following.
Part A
the initial pH
Express your answer using two decimal places.
pH =
11.95
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Correct
Part B
the volume of added acid required to reach the equivalencepoint
V =
28.6
  mL Â
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Correct
Part C
the pH at 5.0 mL of added acid
Express your answer using two decimal places.
pH =
Part D
the pH at one-half of the equivalence point
Express your answer using two decimal places.
pH =
Part E
the pH at the equivalence point
Express your answer using two decimal places.
pH =
Part F
the pH after adding 5.0 mL of acid beyond the equivalencepoint
Express your answer using two decimal places.
Answer & Explanation
Solved by verified expert
3.8 Ratings (411 Votes)
millimoles of base 23 x 018 414 c millimoles of acid added 50 x 0145 0725 414 0725 3415 millimoles base left 0725 millimoles salt formed salt
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