For the equilibrium,
2NOCl(g) 2NO(g) + Cl2(g)
the value of the equilibrium constant, Kc is 3.75 × 10–6 at 1069 K.
The value of Kp for the reaction at this temperature is:
1. 0.048
2. 0.67
3. 0.29
4. 0.033
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 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 %
The solubility of A2X3 in pure water, assuming that neither kind of ion reacts with water is:
(solubility product of A2X3, Ksp = 1.1 × 10–23)
1. | 5.0 × 10–5 mol/L. | 2. | 1.0 × 10–5 mol/L |
3. | 1.0 × 10–4 mol/L | 4. | 5.0 × 10–4 mol/L. |
The pKb of dimethylamine and pka of acetic acid are 3.27 and 4.77 respectively at T (K).
The correct option for the pH of dimethylammonium acetate solution is:
1. 7.75
2. 6.25
3. 8.50
4. 5.50
The compound with the highest pH among the following is:
1. CH3COOK
2. Na2CO3
3. NH4Cl
4. NaNO3
At 25 ºC, the dissociation constant of a base, BOH, is 1.0 × 10–12. The concentration of hydroxyl ions in 0.01M aqueous solution of the base would be:
1. | 1.0 × 10–6 mole L–1 | 2. | 1.0 × 10–7 mole L–1 |
3. | 2.0 × 10–6 mole L–1 | 4. | 1.0 × 10–5 mole L–1 |
For the given reaction: H2NCOONH4 (s) \( \rightleftharpoons\) 2NH3 (g) + CO2 (g),
total pressure at equilibrium is found to be 18 atmospheres. The value of Kp for the above equilibrium will be
1. 72 atm3
2. 144 atm3
3. 432 atm3
4. 864 atm3
At 4oC , ionic product of water (K\(\omega\)) is 10-16 . At this temperature, a solution has pH = 7.5 . The nature of this solution at 4oC will be
1. Acidic
2. Alkaline
3. Neutral
4. Cannot be predicted