Chemistry Question Bank

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

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

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

In the reaction A(g) + 2B(g) C(g) + Q kJ, greater product will be obtained or the forward reaction is favoured by

Following gaseous reaction is undergoing in a vessel C2H4 + H2 C2H6; H = – 32.7 Kcal Which will increase the equilibrium concentration of C2H6

The effect of increasing the pressure on the equilibrium 2A(g) + 3B(g) 3A(g) + 2B(g) is

The exothermic formation of ClF3 is represented by the equation Cl2(g) + 3F2(g) 2ClF3(g); H = – 329 kJ Which of the following will increase the quantity of ClF3 in an equilibrium mixture of Cl2, F2 and ClF3

In which of the following system, doubling the volume of the container cause a shift to the right

Change in volume of the system does not alter the number of moles in which of the following equilibrium

For the gas phase reaction 2 NO N2 + O2, H = – 43.5 Kcal mol–1which one of the statement below is true for N2 (g) + O2 (g) 2 NO (g)

According the Le-Chatelier’s principle, adding heat to a solid and liquid in equilibrium will cause the

Which one of the following information can be obtained on the basis of Le Chatelier principle ?

In which of the following, the forward reaction is favoured by use of high pressure ?