n2o4 g harpoons 2no2 g kc 57 times 10 pow 9 at 298k at

$${N_2}{O_{4\left( g \right)}} \rightleftharpoons 2N{O_{2\left( g \right)}};{K_c} = 5.7 \times {10^{ - 9}}$$ at $$298\,K$$
At equilibrium

A. concentration of $$N{O_2}$$ is higher than that of $${N_2}{O_4}$$

B. concentration of $${N_2}{O_4}$$ is higher than that of $$N{O_2}$$

C. both $${N_2}{O_4}$$ and $$N{O_2}$$ have same concentration

D. concentration of $${N_2}{O_4}$$ and $$N{O_2}$$ keeps on changing.

Answer : concentration of $${N_2}{O_4}$$ is higher than that of $$N{O_2}$$

Solution :
Smaller value of equilibrium constant $$\left( { < {{10}^{ - 3}}} \right)$$ signifies the greater concentration of reactants as compared to that of products.

Releted MCQ Question on
Physical Chemistry >> Chemical Equilibrium

Releted Question 1

For the reaction : $${H_2}\left( g \right) + {I_2}\left( g \right) \rightleftharpoons 2HI\left( g \right)$$ the equilibrium constant $${K_p}$$ changes with

A. total pressure

B. catalyst

C. the amounts of $${H_2}$$ and $${I_2}$$ present

D. temperature

View Answer

Releted Question 2

A liquid is in equilibrium with its vapour at its boiling point. On the average, the molecules in the two phases have equal :

A. inter-molecular forces

B. potential energy

C. total energy

D. kinetic energy

View Answer

Releted Question 3

Pure ammonia is placed in a vessel at a temperature where its dissociation constant $$(a)$$ is appreciable. At equilibrium :

A. $${K_p}$$ does not change significantly with pressure.

B. does not change with pressure.

C. concentration of $$N{H_3}$$ does not change with pressure.

D. concentration of hydrogen is less than that of nitrogen.

View Answer

Releted Question 4

An example of a reversible reaction is :

A. $$Pb{\left( {N{O_3}} \right)_2}aq + 2NaI\left( {aq} \right) \to Pb{I_2}\left( s \right) + 2NaN{O_3}\left( {aq} \right)$$

B. $$AgN{O_3}\left( {aq} \right) + HCl\left( {aq} \right) \to AgCl\left( s \right) + NaN{O_3}\left( {aq} \right)$$

C. $$2Na\left( s \right) + {H_2}O\left( l \right) \to 2NaOH\left( {aq} \right) + {H_2}\left( g \right)$$

D. $$KN{O_3}\left( {aq} \right) + NaCl\left( {aq} \right) \to KCl\left( {aq} \right) + NaN{O_3}\left( {aq} \right)$$

View Answer

$${N_2}{O_{4\left( g \right)}} \rightleftharpoons 2N{O_{2\left( g \right)}};{K_c} = 5.7 \times {10^{ - 9}}$$ at $$298\,K$$
At equilibrium

Releted MCQ Question on
Physical Chemistry >> Chemical Equilibrium

For the reaction : $${H_2}\left( g \right) + {I_2}\left( g \right) \rightleftharpoons 2HI\left( g \right)$$ the equilibrium constant $${K_p}$$ changes with

A liquid is in equilibrium with its vapour at its boiling point. On the average, the molecules in the two phases have equal :

Pure ammonia is placed in a vessel at a temperature where its dissociation constant $$(a)$$ is appreciable. At equilibrium :

An example of a reversible reaction is :

Practice More Releted MCQ Question on
Chemical Equilibrium

Practice More MCQ Question on Chemistry Section

$${N_2}{O_{4\left( g \right)}} \rightleftharpoons 2N{O_{2\left( g \right)}};{K_c} = 5.7 \times {10^{ - 9}}$$ at $$298\,K$$ At equilibrium

Releted MCQ Question on Physical Chemistry >> Chemical Equilibrium

For the reaction : $${H_2}\left( g \right) + {I_2}\left( g \right) \rightleftharpoons 2HI\left( g \right)$$ the equilibrium constant $${K_p}$$ changes with

A liquid is in equilibrium with its vapour at its boiling point. On the average, the molecules in the two phases have equal :

Pure ammonia is placed in a vessel at a temperature where its dissociation constant $$(a)$$ is appreciable. At equilibrium :

An example of a reversible reaction is :

Practice More Releted MCQ Question on Chemical Equilibrium

Practice More MCQ Question on Chemistry Section

$${N_2}{O_{4\left( g \right)}} \rightleftharpoons 2N{O_{2\left( g \right)}};{K_c} = 5.7 \times {10^{ - 9}}$$ at $$298\,K$$
At equilibrium

Releted MCQ Question on
Physical Chemistry >> Chemical Equilibrium

Practice More Releted MCQ Question on
Chemical Equilibrium