The pH of a solution obtained by mixing 50ml of 0.4N HCl and 50ml of 0.2M NaOH is:

1. 13

2. 12

3. 1.0

4. 2.0

K_b for a monoacidic base whose 0.10 M solution has a pH of 10.48

1. 9 X 10^-6

2. 9 X 10^-9

3. 9 X 10^-7

4. 3 X 10^-7

In an acidic Buffer solution (CH₃COOH + CH₃COONa), the species mainly present in the solution are:

(Ignore negligible amount)

1. CH₃COOH, CH₃COO^-, CH₃COONa, H⁺

2. CH₃COO^-, Na⁺, CH₃COOH

3. CH₃COONa, CH₃COO-, H⁺

4. CH₃COO^-, Na⁺, H⁺, CH₃COONa

What happens to the pH when NH₄Cl is added to an NH₄OH solution?

1. Increases

2. Decreases

3. Remains unchanged

4. First decreases and then increases

The most hydrolyzed salt among the following is-

(Assume that K_b of all weak bases is the same)
1. NH₄Cl
2. CuSO₄
3. AlCl₃
4. All are equally hydrolyzed.

The pH of 10^-6 M CH₃COOH (K_a = 1.8 X 10^-5) is:

1. 5.37

2. In between 6 & 7

3. 7

4. 8.63

60 ml 1M CH₃COOH is mixed with 20 ml 1 M NaOH then pH of resulting solution will be

(K_a = 1.8 X 10^-5, log1.8 = 0.25)

1. 8.55

2. 4.95

3. 4.45

4. 7.45

In which solvent, solubility of AgCl is maximum ?

1. 0.01 M NaCl

2. Pure Water

3. 0.01 M NH₄OH

4. 0.05 M AgNO₃

$\frac{{\mathrm{K}}_{\mathrm{p}}}{{\mathrm{K}}_{\mathrm{c}}}$ for the gaseous reaction:

$\mathrm{I}.<mspace\; width="1em"></mspace>2\mathrm{A}<mspace\; width="1em"></mspace>+<mspace\; width="1em"></mspace>3\mathrm{B}<mspace\; width="1em"></mspace>\rightleftharpoons 2\mathrm{C}$
$\mathrm{II}.<mspace\; width="1em"></mspace>2\mathrm{A}\rightleftharpoons 4\mathrm{B}$
$\mathrm{III}.<mspace\; width="1em"></mspace>\mathrm{A}+\mathrm{B}+2\mathrm{C}<mspace\; width="1em"></mspace>\rightleftharpoons 4\mathrm{D}$

Would be respectively:

1. (RT)^-3, (RT)², (RT)⁰ 

2. (RT)^-3, (RT)-², (RT)^-1 

3. (RT)^-3, (RT)², (RT) 

4. None of the above

N₂O₄ dissociates as ${\mathrm{N}}_2{\mathrm{O}}_4\left(\mathrm{g}\right)\rightleftharpoons 2{\mathrm{NO}}_2\left(\mathrm{g}\right)$ at 273 K and 2 atm pressure. The equilibrium mixture has a vapour density of 41. What will be the percentage degree of dissociation ?

1. 14.2%

2. 16.2%

3. 12.2%

4. 87.8%