Chemistry Question Bank

1.386 hours are required for the disappearance of 75% of a reactant of first-order reaction. What is the rate constant of the reaction?

For the first order reaction A ⟶ Products, which one of the following is the correct plot of log [A] versus time? (a) (b) (c) (d)

…A… dependence of rate is called differential rate equation. Choose the suitable word to replace A.

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

For the all gas reaction at 1000 K : 2HI H2 + I2, K = 0.0344. If you were to begin with 8.0 M of HI in a fixed volume container, what would be the equilibrium concentration of H2 ?

Consider the reaction NaBr(aq) + H2SO4(aq) NaHSO4(aq) + HBr(aq). The equilibrium constant is 8.3 × 10 –2. If the equilibrium concentrations of NaBr, H2SO4 and NaHSO4 are 6.0 M, 9.0 M and 3.0 M respectively, what is th…

When A2 and B2 are allowed to react, the equilibrium constant of the reaction at 27ºC is found (Kc = 4). A2(g) + B2(g) 2AB(g) What will be the equilibrium concentration of AB ?

I I I This reaction is set-up in aqueous medium. We start with 1 mol of I2 and 0.5 mol of I– in 1L flask. After equilibrium is reached, excess of AgNO3 gave 0.25 mol of yellow ppt. Equilibrium constant is : [Given…

N2O4 2NO2, Kc = 4. This reversible reaction is studied graphically as shown in the given figure. Select the correct statement out of I, II and III. I : Reaction quotient has maximum value at point A II : Reaction proc…

N2(g) + 3H2(g) 2NH3(g) Initially the molar ratio of N2 and H2 was 1 : 3. At equilibrium, 50% of each has reacted. If the equilibrium pressure is P, the partial pressure of NH3 at equilibrium is:

Given : Reaction Equilibrium constant N2(g) + 3H2(g) 2NH3(g) K1 N2(g) + O2(g) 2NO(g) K2 H (g) O (g) H O(g) K3 The equilibrium constant K4 for the following reaction 2NH (g) O (g) 2NO(g) 3H …

3O2 (g) ⇌ 2O3(g) for the above reaction at 298 K, Kc is found to be 3.0 × 10-59. If the conc. of O2 at equilibrium is 0.040 M then concentration of O3 in M is. (NEET 2022)

Hydrolysis of sucrose is given by the following reaction : Sucrose H O Glucose Fructose If the equilibrium constant (KC) is 2 10 x at 300 K, the value of o rG at the same temperature will be (NEET 2020) (a) 8.3…

Which one of the following conditions will favour maximum formation of the product in the reaction, A2 (g) + B2 (g) X2 (g); rH = – X kJ? (NEET 2018)

A 20 litre container at 400 K contains CO2(g) at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the contain…

The equilibrium constants of the following are N 3H 2NH ;K N O 2NO;K H O H O;K The equilibrium constant (K) of the reaction : K 2NH O 2NO 3H O will be (NEET 2017) (a) K K K (b) K K K (c) K K K (d) K K K

Which of the following statements is correct for a reversible process in a state of equilibrium? (NEET 2015) (a) o G 2.30RT log K (b) o G 2.30 RT log K

If the value of equilibrium constant for a particular reaction is 1.6 10 x , then at equilibrium the system will contain (NEET 2015)

If the equilibrium constant for 2 g 2 g g N O 2NO is K, the equilibrium constant for 2 g 2 g g N O NO will be (NEET 2015)

Which of the following statement is correct for a reversible process in a state of equilibrium ? (AIPMT 2015) (a) G = 2.30 RT log K (b) o G = –2.30 RT log K (c) o G = 2.30 RT log K (d) G = – 2.30 RT log K

If the value of an equilibrium constant for a particular reaction is 1.6 × 1012, then at equilibrium the system will contain (AIPMT 2015) (a)mostly reactants