The value of Kp for the reaction,
CO2 (g) + C (s) 2CO (g)
is 3.0 at 1000 K. If initially \(P_{CO_{2}}\)= 0.48 bar and PCO = 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 Kc for the reaction 2A 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) 2NO2 (g)
The total pressure at equilbrium was found to be 9.15 bar. The value of Kc 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: Kc= 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 Kc 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 Glucose + Fructose
The equilibrium constant Kc 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:
Acid | Conjugate Base |
a. HF | H2F– |
b. H2SO4 | HSO4– |
c. \(HCO_{3}^{-}\) | \(CO_{3}^{2-}\) |
1. | a, c | 2. | a, b |
3. | b, c | 4. | Only c is correct |
The correct match among the following is/are-
Bronsted bases | Conjugate Acid |
a. \(NH_{2}^{-}\) | NH3 |
b. NH3 | \(NH_{4}^{+}\) |
c. \(HCOO^{-}\) | \(CO_{2}^{2-}\) |
1. a, c
2. a, b
3. b, c
4. Only c is correct
The incorrect match among the following is:
a. HO– = Lewis base
b. F– = Lewis base
c. H+ = Lewis acid
d. BCl3 = Lewis base
1. Both a and b
2. Only b
3. Only d
4. Both a and d
The concentration of hydrogen ions in a sample of soft drink is 3.8 × 10–3M. The pH of soft drink is:
(Given: log 3.8 = 0.58)
1. | 1.45 | 2. | 2.42 |
3. | 3.76 | 4. | 2.79 |