AIPMT 2006 | Ionic Equilibrium Question 43 | Chemistry

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AIPMT 2006

MCQ (Single Correct Answer)

-1

The hydrogen ion concentration of a 10^$$-$$8 M, HCl aqueous solution at 298 K (K_w = 10^$$-$$14) is

1.0 $$ \times $$ 10^$$-$$8 M

1.0 $$ \times $$ 10^$$-$$6 M

1.0525 $$ \times $$ 10^$$-$$7 M

9.525 $$ \times $$ 10^$$-$$8 M

AIPMT 2006

MCQ (Single Correct Answer)

-1

Which of the following pairs constitutes a buffer?

HCl and KCl

HNO₂ and NaNO₂

NaOH and NaCl

HNO₃ and NH₄NO₃

AIPMT 2005

MCQ (Single Correct Answer)

-1

H₂S gas when passed through a solution of cations containing HCl precipitates the cations of second group of qualitative analysis but not those belonging to the fourth group. It is because

presence of HCl decreases the sulphide ion concentration

solubility product of group II sulphides is more than that of group IV sulphates

presence of HCl increases the sulphide ion concentration

sulphides of group IV cations are unstable in HCl.

AIPMT 2005

MCQ (Single Correct Answer)

-1

At 25^oC, the dissociation constant of a base, BOH, is 1.0 $$ \times $$ 10^$$-$$12. The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be

1.0 $$ \times $$ 10^$$-$$5 mol L^$$-$$1

1.0 $$ \times $$ 10^$$-$$6 mol L^$$-$$1

2.0 $$ \times $$ 10^$$-$$6 mol L^$$-$$1

1.0 $$ \times $$ 10^$$-$$7 mol L^$$-$$1

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