Chemistry Question Bank

According to Le-Chatelier principle, if heat is given to solid-liquid system, then

The reaction A + B C + D +heat has reached equilibrium. The reaction may be made to proceed forward by

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

Which of the following reactions proceed at low pressure

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

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

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

Which of the following statements regarding a chemical equilibrium is wrong

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

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 which of the following reaction Kp > Kc

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

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

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

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

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

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

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

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

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

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

When 3 moles of ethyl alcohol are mixed with 3 moles of acetic acid, 2 moles of ester are formed at equilibrium according to the equation CH3COOH + C2H5OH CH3COOC2H5 + H2O The value of the equilibrium constant for the…

1.1 mole of A is mixed with 2.2 mole of B and the mixture is kept in a one-litre flask till the equilibrium, A + 2B 2C + D is reached. At equilibrium 0.2 mol of C is formed. The equilibrium constant of the above react…

4 moles of A are mixed with 4 moles of B when 2 moles of C are formed at equilibrium according to the reaction A + B C + D The value of the equilibrium constant is