List of top Chemistry Questions on Law Of Chemical Equilibrium And Equilibrium Constant asked in Andhra Pradesh Engineering Agriculture and Medical Common Entrance Test

At 27°C, the degree of dissociation of HA (weak acid) in 0.5 M of its solution is 1%. The concentrations of H $_3$ O $^+$ , A $^-$ , and HA at equilibrium (in mol L $^{-1}$ ) are respectively:

When chlorine reacts with hot and conc. NaOH, the products formed are

At $27^\circ C$ , the degree of dissociation of weak acid (HA) in its 0.5M aqueous solution is 1%. Its $K_a$ value is approximately:

10 g of a metal (M) reacts with oxygen to form 11.6 g of oxide. What is the equivalent weight of $M$ ?

At equilibrium for the reaction $A_2 (g) + B_2 (g) \rightleftharpoons 2AB (g)$ , the concentrations of $A_2$ , $B_2$ , and $AB$ respectively are $1.5 \times 10^{-3} M$ , $2.1 \times 10^{-3} M$ , and $1.4 \times 10^{-3} M$ . What will be $K_p$ for the decomposition of $AB$ at the same temperature?

At temperature $T$ (K), the equilibrium constant $K_c$ for the reaction:

A_2(g) \rightleftharpoons B_2(g)

is 99.0. Two moles of

A_2(g)

were heated in a 1L closed flask to reach equilibrium. What are the equilibrium concentrations (in

mol \ L^{-1}

) of

A_2(g)

and

B_2(g)

?

In a one litre flask, 2 moles of $A_2$ was heated to $T(K)$ and the above equilibrium is reached. The concentrations at equilibrium of $A_2$ and $B_2$ are $C_1(A_2)$ and $C_2(B_2)$ respectively. Now, one mole of $A_2$ was added to flask and heated to $T(K)$ to establish the equilibrium again. The concentrations of $A_2$ and $B_2$ are $C_3(A_2)$ and $C_4(B_2)$ respectively. What is the value of $C_3(A_2)$ in mol L $^{-1}$ ?

The correct statements among the following are:

i. Saline hydrides produce $\text{H}_2$ gas when reacted with water.
ii. Presently ~77% of the industrial dihydrogen is produced from coal.
iii. Commercially marketed $\text{H}_2 \text{O}_2$ contains 3% $\text{H}_2 \text{O}_2$ .

The disproportionation products of ortho phosphorous acid are:

What is the conjugate base of chloric acid?

Aluminium carbide on reaction with $D_2O$ gives $Al(OD)_3$ and ‘X’. What is ‘X’?

At 300 K, for the reaction,

\text{A}_2 \text{B}_2(g) \rightleftharpoons \text{A}_2(g) + \text{B}_2(g)

\text{is 100 mol L}^{-1}

.

\text{What is its } K_p \text{(in atm)} \text{at the same temperature?}

\text{(R = 0.082 L atm mol}^{-1}

\text{K}^{-1})