Q2-3:(a) Given that Kb for ammonia is 1.8 X 10 -5 and that for methylamine is 4.4 X 10 -4, which is the stronger base? (b) which is the stronger acid ,the ammonium ion or the methylammonium ion ? (c) calculate the Ka for NH,* and CH;NH;* Q2-4: A particular sample of vinegar has a pH of 2.90, assuming that the vinegar contains only acetic acid (Ka acetic acid in vinegar . 1.8 X 10 -5), calculate the concentration of Q2-5: Calculate the molar concentration of OH-ions in an 0.85M solution of hypobromite ion , BrO- (Kp 4.0X10-6) .what the pH value of this solution?

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Q2-3:(a) Given that Kb for ammonia is 1.8 X 10 -5 and that
for methylamine is 4.4 X 10 -4, which is the stronger
base? (b) which is the stronger acid ,the ammonium
ion or the methylammonium ion ? (c) calculate the Ka
for NH,* and CH;NH;*
+
Q2-4: A particular sample of vinegar has a pH of 2.90,
assuming that the vinegar contains only acetic acid
(Ka
acetic acid in vinegar .
1.8 X 10 -5), calculate the concentration of
Q2-5: Calculate the molar concentration of OH-ions in an
0.85M solution of hypobromite ion , BrO- (Kp
4.0X10-6) .what the pH value of this solution?
Transcribed Image Text:Q2-3:(a) Given that Kb for ammonia is 1.8 X 10 -5 and that for methylamine is 4.4 X 10 -4, which is the stronger base? (b) which is the stronger acid ,the ammonium ion or the methylammonium ion ? (c) calculate the Ka for NH,* and CH;NH;* + Q2-4: A particular sample of vinegar has a pH of 2.90, assuming that the vinegar contains only acetic acid (Ka acetic acid in vinegar . 1.8 X 10 -5), calculate the concentration of Q2-5: Calculate the molar concentration of OH-ions in an 0.85M solution of hypobromite ion , BrO- (Kp 4.0X10-6) .what the pH value of this solution?
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