AIPMT 2011 Prelims | Ionic Equilibrium Question 33 | Chemistry

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

A buffer solution is prepared in which the concentration of NH₃ is 0.30 M and the concentration of NH⁺₄ is 0.20 M. If the equilibrium constant, K_b for NH₃ equals 1.8 $$ \times $$ 10^$$-$$5, what is the pH of this solution? (log 2.7 = 0.43)

9.08

9.43

11.72

8.73

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

If pH of a saturated solution of Ba(OH)₂ is 12, the value of its K_sp is

4.00 $$ \times $$ 10^$$-$$6 M³

4.00 $$ \times $$ 10^$$-$$7 M³

5.00 $$ \times $$ 10^$$-$$6 M³

5.00$$ \times $$ 10^$$-$$7 M³

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

What is [H⁺] in mol/L of a solution that is 0.20 M in CH₃COONa and 0.10 M in CH₃COOH? K_a for CH₃COOH = 1.8 $$ \times $$ 10^$$-$$5

3.5 $$ \times $$ 10^$$-$$4

1.1 $$ \times $$ 10^$$-$$5

1.8 $$ \times $$ 10^$$-$$5

9.0 $$ \times $$ 10^$$-$$6

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

In a buffer solution containing equal concentration of B^$$-$$ and HB, the K_b for B^$$-$$ is 10^$$-$$10. The pH of buffer solution is

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