Equilibrium CBSE Questions & Answers

the concentrations in an equilibrium mixture are related by the following equilibrium equation, \({{\text{K}}_{\text{c}}} = \) \(\frac{{\left[ C \right]\left[ D \right]}}{{\left[ A \right]\left[ B \right]}}\) Where Kc is called as

Equilibrium constant for the reaction, \({\text{4NH3}}\left( {\text{g}} \right){\text{ }} + {\text{ 5O2}}\left( {\text{g}} \right)!{\text{4NO}}\left( {\text{g}} \right){\text{ }} + {\text{ 6H2O}}\) (g) is written as

For reactions involving gases, however, it is usually more convenient to express the equilibrium constant in terms of

For reactions in equilibrium involving gases, like \({{\text{N}}_{\text{2}}}\left( {\text{g}} \right){\text{ }} + {\text{ 3}}{{\text{H}}_{\text{2}}}\left( {\text{g}} \right)\) \( \rightleftharpoons \) \({\text{2N}}{{\text{H}}_{\text{3}}}\left( {\text{g}} \right)\) choose one of the following options (Hint: p \( \propto \) gas]

If the \({\text{Kc}}\) is neither too small nor too large, one of the following will happen

Find \({\text{Kc}}\) for the following reaction, if \({\text{C}}{{\text{O}}_{\text{2}}}\)pressure is in atmospheres:\(CaC03(s)?CaO(s) + CO2(g)Kp = 2.1X?10{?^{( - 4)}}(at1000.K)\) Hint: \({K_p} = {K_c}{(RT)^{\triangle {n_{gas}}}}\)

A particular ratio of product to reactant helps in predicting the direction in which a given reaction will proceed at any stage. is called

The value of \({\text{Kc}}\) for a reaction is directly related to the thermodynamics of the reaction and in particular,

In order to decide what course the reaction adopts and make a qualitative prediction about the effect of a change in conditions on equilibrium we use

A catalyst increases the rate of the chemical reaction for the conversion of reactants to products by

A bare proton, \({{\text{H}}^ + }\) is very reactive and cannot exist freely in aqueous solutions. Thus, it bonds to the oxygen atom of a solvent water molecule to give

Hydronium ion concentration in molarity is more conveniently expressed on a logarithmic scale known as the

The solutions which resist change in pH on dilution or with the addition of small amounts of acid or alkali

We know that the relationship between \({{\text{K}}_{\text{c}}}\) and \({{\text{K}}_{\text{p}}}\) is \({K_p} = {K_c}{(RT)^{\triangle {n_{gas}}}}\) What would be the value of Δngas for the reaction \({\text{N}}{{\text{H}}_{\text{4}}}{\text{Cl }}\left( {\text{s}} \right){\text{ }} \to {\text{N}}{{\text{H}}_{\text{3}}}\left( {\text{g}} \right){\text{ }} + {\text{ HCl }}\left( {\text{g}} \right)\)

For the reaction \({{\text{H}}_{\text{2}}}\left( {\text{g}} \right){\text{ }} + {\text{ }}{{\text{I}}_{\text{2}}}\left( {\text{g}} \right)\) \( \rightleftharpoons \) 2HI (g), the standard free energy is \(\Delta {G^ - } > 0\) The equilibrium constant (K ) would be __________.