Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa =...

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Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKa

Answer 1

Answer #1

4) Answer is A) CH3COOH. Since pKa of CH3COOH is high hence it is least acidic and pH of the solution is high.

5) Answer is D). Cr(ClO4)3 dissociate in water to give strong acid HClO4 hence it is acidic in nature.

6) Answer is A). Because HClO is weak acid and other are strong acids.

7) Answer is E) . Methyamine has least pKa hence it's most basic and it's conjugate acid is weakest.

8) Answer is D). Since pKa of HST is high hence it is least acidic and pH is high.

answer is D). Conjugate acid is formed by abstraction of proton hence H3PO4.

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Answer 2

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