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
The ionization constant of HF is 3.2 × 10–4 and its solution concentration is 0.02 M. The pH of the solution is-
1. 3.45
2. 2.62
3. 4.21
4. 1.89
The pH of 0.1M monobasic acid is 4.50. The value of pKa of the monobasic acid is-
1. 6. 3
2. 7.4
3. 8.0
4. 9.0
The ionization constant of the hypochlorous acid is 2.5 × 10–5. The concentration of hypochlorous acid 0.08 M. The percent dissociation of HOCl is-
1. 2.56 %
2. 1.21 %
3. 1. 76 %
4. 2.21 %