Chemistry Question Bank

In the above reaction one mole each of the acetic acid and alcohol are heated in the presence of little conc. H2SO4. On equilibrium being attained

If Kp for a reaction A (g) + 2 B (g) 3 C (g) + D (g) is 0.05 atm at 1000 K. Its Kc in terms of R will be

For reaction PCl3 (g) + Cl2 (g) PCl5 (g), the value of Kc at 250ºC is 26. The value of Kp at this temperature will be :

Kc for the reaction N2 (g) + O2 (g) 2 NO (g) at 300 K is 4.0 × 10–6. Kp for the above reaction will be (R = 2 cal mol–1 K–1)

For which one of the following reactions p c K K ? (a) PCl PCl Cl (b) N O 2NO (c) N 3H 2NH (d) 2SO 2SO O

Calculate c K for the reversible process given below if p K 167 and T = 800ºC CaCO (s) CaO(s) CO (g)

In which of the following gaseous reaction, the value of Kp will be equal to Kc

For N2(g) + 3H2(g) 2NH3(g) + heat

In which of the following equilibria, the value of Kp is less than Kc

For the reaction H2(g) + I2(g) 2HI(g) at 721K the value of equilibrium constant (Kc) is 50. When the equilibrium concentration of both is 0.5M, the value of Kp under the same conditions will be

The reaction between N2 and H2 to form ammonia has Kc = 6 × 10–2 at the temperature 500°C. The numerical value of Kp for this reaction is

In which of the following reaction Kp > Kc

What is the effect of halving the pressure by doubling the volume on the following system at 500°C H2(g) + I2(g) 2HI(g)

In equilibrium CH3COOH + H2O CH3COO– + H The equilibrium constant may change when

Which of the following statements regarding a chemical equilibrium is wrong

In the reaction, A2(g) + 4 B2(g) 2AB4(g) + heat the formation of AB4will be favoured at

The formation of SO3 takes place according to the following reaction, 2SO2 + O2 2SO3 ; H = – 45.2 Kcal The formation of SO3 is favoured by

N2 + O2 2NO - Q cals In the above reaction which is the essential condition for the higher production of NO

Which of the following reactions proceed at low pressure

In the following reversible reaction 2SO2 + O2 2SO3 + Q Cal Most suitable condition for the higher production of SO3 is

For any pure substance at atmospheric pressure, the temperature at which the solid and liquid phases are at equilibrium is called the normal …(X)… or normal …(Y)… of the substance.

Standard free energy change for an equilibrium is zero, the value of Kp is (HARYANA PMT 2009)

Assertion For the reaction, 2NO g O g 2NO Increase in pressure favours the formation of NO2. Reason The reaction is exothermic (AIIMS 2009)

Which reaction is not affected by change in pressure? (AFMC 2009) (a) (g) (g) (g) H I 2HI (b) (s) (g) (g) 2C O 2CO (c) (s) (g) (g) N 3H 2NH (d) (g) (g) (g) PCl PCl Cl

For the equilibrium, 2NO (g) N O (g) 14.6 kcal, (CPMT 2009) Increase in temperature