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Please don't answer if can't help with all :) need help for exam prep:

1a:

If the Ką of a monoprotic weak acid is 3.4 x 10-6, what is the pH of a 0.36 M solution of this acid? pH =

1b:

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0117 M solution. The pH of the resulting solution is 2.

1c:

If a buffer solution is 0.140 M in a weak base (Kb = 3.4 x 10-5) and 0.450 M in its conjugate acid, what is the pH? pH 11.7 I

1d:

Calculate the pH at the equivalence point for the titration of 0.240 M methylamine (CH3NH2) with 0.240 M HCl. The Ky of methy

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Answer #1

Day HA is Week mono protic acid. HA + H₂O A & Hot at 0.36(M) 750 .x at 0.36-2. equilibrium, [A-] [Hot] x² Ka of neida 0.36.x2 Ka КА pH = 14- РОН Given, (1) а Оде Д. ОТЈа (м) - 3 2.398 хүр 4 хв. 01/2 4:18 x 10 of acid 19іях) 1 In briffer solution cond) Following reaction oruurs: f etti NH₂4 CH₂NH₂ of Hel is titrated against 2 As, 0129 (M) CH₃NH2 0.29 (M) CH?Nit2 same of He

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