EASY
AS and A Level
IMPORTANT
Earn 100

Bromine is a reddish-brown liquid that vaporises at room temperature. Some liquid bromine is put in a closed jar. The colour of the bromine vapour above the liquid gets darker and darker until the depth of colour remains constant. Bromine liquid still remains in the jar. Explain what is happening in terms of changes in concentration of the bromine molecules in the vapour.

Important Questions on Equilibria

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Question>Q 4
Predict the effect of increasing the pressure on the following reactions: N2O4(g)⇌2NO2(g).
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Question>Q 4
Predict the effect of increasing the pressure on the following reactions: CaCO3(s)⇌CaO(s)+CO2(g).
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Question>Q 4
Predict the effect of decreasing the pressure on the reaction: 2NO2(g)⇌2NO(g)+O2(g).
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Question>Q 5
Predict the effect of increasing the temperature on the reaction: H2(g)+CO2(g)⇌H2O(g)+CO(g); ∆H=+41.2 kJ mol-1.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Question>Q 5
In the reaction Ag2CO3(s)⇌Ag2O(s)+CO2(g), increasing the temperature increases the amount of carbon dioxide formed at constant pressure. Is this reaction exothermic or endothermic? Explain your answer.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Question>Q 6
Write the equilibrium expression for the following reaction and state the units of Kc: CO(g)+2H2(g)⇌CH3OHg.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Question>Q 6
Write equilibrium expressions for the following reactions and state the units of Kc: 4HClg+O2g⇌2H2Og+2Cl2g
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 8 - Equilibria>Questions

Calculate the value of Kc for the following reaction using the information below: H2(g)+CO2(g)⇌H2O(g)+CO(g).

Initial concentration of H2(g)=10.00 mol dm-3.

Initial concentration of CO2(g)=10.00 mol dm-3.

Equilibrium concentration of CO(g)=9.47 mol dm-3.