Chemical Equilibrium

An endothermic reaction is always favored by........

• Low Temperature

• High Temperature

• Not dependent on temperature

• Low pressure

 $For\ the\ reaction:\ CH_4\ \left(g\right)+\ O_2\ \ \left(g\right)\rightarrow\ CO_2\ \left(g\right)+\ 2H_2O\ \left(g\right)$  forward reaction is favoured by

• Decrease in pressure

• Increase in pressure

• No impact of pressure

• Equilibrium constant changes

What is true for catalyst in a chemical reaction?

• It impacts the equilibrium constant

• It disturbs the equilibrium composition

• It helps to attain the equilibrium faster

• None of the above.

What is true about chemical equilibrium?

• It is dynamic in nature

• Rate of forward reaction = Rate of backward reaction at equilibrium

• Composition of reactants and products do not change on reaching equilibrium

• All of above.

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

 $For\ reaction:\ 2C\left(s\right)\ +\ O_{2\ }\left(g\right)\ \rightarrow\ 2CO_{2\ }\left(g\right)$  

•  $K_p\ =\ K_c$  

•  $K_{p\ }=\ \frac{K_c}{RT}$  

•  $K_{p\ }=K_{c\ }RT$  

•  $K_p\ =\ K_c\left(RT\right)^2$  

Tags

NGSS.HS-PS1-6

Which of the following changes the equilibrium constant?

• Pressure

• Temperature

• Concentration

• Catalyst

Tags

NGSS.HS-PS1-6

If the concentration of a reactant is increased then equilibrium shifts in

• Forward direction

• Backward direction

• Forward direction for endothermic reaction

• Backward direction for endothermic reaction

Tags

NGSS.HS-PS1-5

 $For\ reaction\ N_{2\ }\ +\ 3H_{2\ }\rightarrow\ 2NH_3\ ;\ At\ equilibrium\ concentration\$  of all reactants and products is 2M. Find the value of Kc

• 1

• 1/2

• 1/4

• 4

Tags

NGSS.HS-PS1-7

If equilibrium constant for a forward reaction is 10 then equilibrium constant for the backward reaction is:

• -10

• 10

• 1/10

• 0.01