Chemistry Question Bank

The equilibrium concentration of X, Y and YX2 are 4, 2 and 2 moles respectively for the equilibrium 2X + Y YX2. The value of Kc is

For the reaction 2SO2 + O2 2SO3, the units of Kc are

A + B C + D. If finally the concentration of A and B are both equal but at equilibrium concentration of D will be twice of that of A then what will be the equilibrium constant of reaction.

For the system A(g) + 2B(g) C(g),the equilibrium

In a reaction A + B C + D, the equilibrium concentrations of A, B, C and D (in moles/litre) are 0.5, 0.8, 0.4 and 1.0 respectively. The equilibrium constant is

On a given condition, the equilibrium concentration of HI, H2 and I2 are 0.80, 0.10 and 0.10 mole/litre. The equilibrium constant for the reaction H2 + I2 2HI will be

4 moles of A are mixed with 4 moles of B. At equilibrium for the reaction A + B C + D, 2 moles of C and D are formed. The equilibrium constant for the reaction will be

The equilibrium constant for the reaction N2(g) + O2(g) 2NO(g) at temperature T is 4×10–4. The value of Kc for the reaction NO N (g) O (g) at the same temperature is

Which of the following reaction(s) is/are in homogeneous equilibria? (a) N g 3H g 2NH g (b) CH COOC H aq H O l CH COOH aq C H OH aq (c) Fe aq SCN aq Fe SCN aq

In a homogeneous system , all the reactants and products are in the

At equilibrium the concentrations of N 3.0 10 M x , O 4.2 10 M x and NO 2.8 10 M x in a sealed vessel at 800K. What will be Kc for the reaction, N g O g 2NO g ?

The following concentrations were obtained for the formation of NH3 from N2 and H2 at equilibrium at 500 K. N 1.5 10 M. x H 3.0 10 M x and NH 1.2 10 M. x Calculate the equilibrium constant. (a) 1.08 10 x (…

Molar concentration of different species is indicated by enclosing these in square bracket and it is implied that these are

At a given temperature, the product of …X… of the reaction products raised to the respective stoichiometric of coefficient in the balanced chemical equation …Y… by the product of concentrations of the reactants raised…

For a reaction, H g I g 2HI g c HI g K H g I g Point out the correct statement.

The equilibrium equation is also known as the …X… because in the early days of chemistry, concentration was called …Y… Here, (X) and (Y) refer to

A mixture of reactants and products in the equilibrium state is called

The active mass of 64 g of HI in a two litre flask would be

Equilibrium constant for the reaction H I 2HI is correctly given by the expression (a) c [H ][I ] K [HI] (b) c [H ][I ] K [2 HI] (c) c [H ][I ] K [HI] (d) c [HI] K [H ][I ]

Equilibrium constant for the reaction : 2NOg Cl g 2NOCl g is correctly given by the expression (a) [2 NOCl] K [2 NO][Cl ] (b) [NOCl] K [NO] [Cl ] (c) [NO] [Cl ] K [NO] [Cl ] (d) [NO] [Cl] K [NOCl]

The equilibrium constant in a reversible chemical reaction at a given temperature

CO gas CO insolution This equilibrium is governed by

The rate of dissolution of sugar is equal is equal to rate of crystallization of sugar can be represented as

When no more solute can be dissolved in solution at a given temperature is known as

Equilibria involving O2 molecules and the protein heamoglobin play a crucial role