Chemistry : Equilibrium

The characteristic ion of an acid in an aqueous solution is :

• H⁺

• ${\mathrm{H}}_2^{+}$

• H₃O⁺

• H₄O⁺

Assertion : Heat of neutralisation for both H₂SO₄ and HCl with NaOH is 53.7 kJ mol^-1.

Reason : Both HCl and H₂SO₄ are strong acids.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false

• If both assertion and reason are false.

The solubility of AgCl is 1.435 g/L. What will be the solubility product ?

• 10^-4

• 0.01

• 0.001

• 0.001

2X + 2Y $\mathrm{\to }$ 2Z

The equilibrium constant for the above reaction :

• $\frac{\left[2\mathrm{X}\right]\left[2\mathrm{Y}\right]}{\left[2\mathrm{Z}\right]}$

• $\frac{\left[\mathrm{X}\right]\left[\mathrm{Y}\right]}{\left[\mathrm{Z}\right]}$

• $\frac{[\mathrm{Z}{]}^2}{\left[\mathrm{X}{]}^2\right[\mathrm{Y}{]}^2}$

• $\frac{[\mathrm{Z}{]}^2}{\left[\mathrm{X}\right]\left[\mathrm{Y}\right]}$

The solubility product for XY is :

• s²

• 2s

• 4s²

• 2s

In a reversible reaction ifthe concentration of reactants and products are doubled , the value of K_c will be :

• half of the initial value

• double of initial value

• one fourth of the initial value

• same the initial value

One mole of SO₃ was placed in a vessel of 1 L capacity at a certain temperature and the following equilibrium was established.

2SO₃ (g) $\rightleftharpoons$ 2SO₂ (g) + O₂ (g)

If 0.6 moles of SO₂ were formed at equilibrium, K_c for the reaction will be

• 0.036

• 0.45

• 0.54

• 0.675

Amines behave as :

• Lewis acid

• Lewis base

• aprotic acid

• neutral compound

The equilibrium constant for the reaction,

$\frac{1}{2}$${{\text{H}}_2}_{\left(g\right)}$$+$$\frac{1}{2}$${\text{I}}_{2_{\left(g\right)}}$$\rightleftharpoons$HI_(g) is K_c

Equilibrium constant for the reaction 2HI_(g) $\rightleftharpoons$H_2(g) + I_2(g)  will be

• 1/K_c

• 1/(K_c)²

• 2/K_c

• 2/(K_c)²

50 mL of 0.1 M HCl and 50 mL of 0.2 M NaOH are mixed .The pH of the resulting solution is :

• 1.30

• 4.2

• 12.70

• 11.70