PCl₅, PCl₃ and Cl₂ are at equilibrium at 500 K and having concentrations 1.59M PCl₃, 1.59M Cl₂ and 1.41 M PCl₅. The value of K_c for the reaction, PCl₅ $\leftrightharpoons$PCl₃ + Cl₂ is-

1. 0.179

2. 17.9

3. 1.79

4. 179

The value of K_c = 4.24 at 800K for the reaction,

CO(g) + H₂O(g) $\leftrightharpoons$CO₂ (g) + H₂ (g)

If only CO and H₂O are present initially at concentrations of 0.10M each.

The equilibrium concentrations of CO₂, and CO are-

1. 0.067 M; 0.033 M
2. 0.76 M; 0.029 M
3. 0.65 M; 0.027 M
4. 0.061 M; 0.30 M

For the equilibrium,

2NOCl(g) $\leftrightharpoons$2NO(g) + Cl₂(g)

the value of the equilibrium constant, K_c  is 3.75 × 10^–6 at 1069 K. 

The value of K_p for the reaction at this temperature is-

1. 0.048

2. 0.67

3. 0.29

4. 0.033

The value of K_p for the reaction,

CO₂ (g) + C (s) $\leftrightharpoons$2CO (g)

is 3.0 at 1000 K. If initially  \(P_{CO_{2}}\)= 0.48 bar and P_CO = 0 bar and pure graphite is present.
The equilibrium partial pressures of CO and CO₂ are respectively-

1. 0.56 bar; 0.15 bar
2. 0.15 bar; 0.75 bar
3. 0.66 bar; 0.15 bar
4. 0.66 bar; 0.25 bar

The value of K_c for the reaction 2A $\leftrightharpoons$B + C is 2 × 10^–3. At a given time, the composition of the reaction mixture is [A] = [B] = [C] = 3 × 10^–4 M.
The reaction will proceed:
1. in the backward direction
2. in the forward direction
3. in both direction
4. cannot be predicted

13.8g of N₂O₄ was placed in a 1L reaction vessel at 400K and allowed to attain equilibrium

N₂O₄ (g) $\leftrightharpoons$ 2NO₂ (g)

The total pressure at equilbrium was found to be 9.15 bar. The  value of K_c is-

1. 3.2
2. 2.6
3. 2.1
4. 3.6

 

3.00 mol of PCl₅ kept in 1L closed reaction vessel was allowed to attain equilibrium at 380K. The
composition of the mixture at equilibrium is-
(Given: K_c= 1.80)

1. [PCl₅] = 1.41 M; [PCl₃] = [Cl₂] = 1.59 M
2. [PCl₅] = 1.61 M; [PCl₃] = [Cl₂] = 1.59 M
3. [PCl₅] = 1.91 M; [PCl₃] = [Cl₂] = 1.71 M
4. [PCl₅] = 2.41 M; [PCl₃] = [Cl₂] = 1.19 M

The value of ∆G^⊖ for the phosphorylation of glucose in glycolysis is 13.8 kJ/mol.
The value of K_c at 298 K is-

1. 5.21 × 10^–3
2. 3.56 × 10^–3
3. 2.81 × 10^–3
4. 3.81 × 10^–3

Hydrolysis of sucrose gives,

Sucrose + H₂O  $\leftrightharpoons$Glucose + Fructose

The equilibrium constant K_c for the reaction is 2 ×10¹³ at 300K. The value of ∆G^⊖ at 300K is-

1. – 5.64 ×10⁴ J mol^–1
2. – 7.64 ×10⁴ J mol^–1
3. – 6.64 ×10⁴ J mol^–1
4. – 8.64 ×10⁴ J mol^–1

The correct match among the following is/are-

1. a, c
2. a, b
3. b, c
4. Only c is correct