The odor of a dead fish is attributed to trimethylamine, (CH3)3N, one of a series of...

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Chemistry

The odor of a dead fish is attributed to trimethylamine,(CH3)3N, one of a series of compounds of nitrogen, carbon, andhydrogen with a general formula of(CH3)_nNH_3-n where n = 0-3 (the n = 0 compoundis ammonia).
a) The Kb of trimethylamine [(CH3)3N)] is 6.5E-5 at 25 C.Calculate the pH of 3.00nE-4 M solution of dimethylamine.
b) The Kb of mythylamine [(CH3)NH2] is 4.4E-4 at 25 C. Calculatethe pH of 2.88E-3 M solution of mythylamine.
c) the Kb of dimethylamine [(CH3)2NH] is 5.9E-4 at 25 C. Whatconcentration of dimethylamine is needed for the solution to havethe same pH as the solution in part B?

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3.7 Ratings (454 Votes)

We must calculate the Ka for the above reaction We will use the Kb of dimethylamine to do this 100 x 1014 x 65 x 105 x 100 x 1014 65 x 105 154 x 1010 Please note that I left some guard digits on the Ka value I will round off the final See Answer

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