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:

Which of the following is/are correct match(s):

1. (a) and (c)
2. (a) and (b)
3. (b) and (c)
4. Only (c)

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)

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 pK_a 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 %