Question

Consider the following system at equilibrium. 2CO(g)+O2(g)<--->2CO2(g) 1. How will increasing the concentration of CO shift the equilibrium? A) to the right B) to the left C) no effect 2. How will increasing the concentration of CO2 shift the equilibrium? A) to the right B) to the left C) no effect 3. How will decreasing the the volume of the container shift the equilibrium? A) to the right B) to the left C) no effect

Answer 1

Concepts and reason

Le Chatlier Principle:

When a change is applied to a system at equilibrium, the equilibrium will shift against the change. The equilibrium of a system will be affected by the changes in temperature, pressure and concentration

Fundamentals

The expression for the equilibrium is given as follows:

For any arbitrary reaction at equilibrium,

The double half arrows in the above reaction indicates that there is a simultaneous change in both directions of the reaction.

Le Châtelier’s principle:

If a system at equilibrium is disturbed, the equilibrium moves in such a way to counteract the change.

The factors that are affecting chemical equilibrium:

oConcentration.

oTemperature.

oPressure (or volume).

Factors that are affecting Equilibrium:

Part 1

The given balanced chemical equation is written below.

The above reaction indicates that carbon monoxide reacts with oxygen and forms carbon dioxide gas.

By increasing the concentration of carbon monoxide, the equilibrium in the reaction shifts towards the right.

Part 2

The given balanced chemical equation is written below.

The above reaction indicates that carbon monoxide reacts with oxygen and forms carbon dioxide gas.

By increasing the concentration of carbon dioxide , the equilibrium in the reaction shifts towards the left.

Part 3

The given balanced chemical equation is written below.

The above reaction indicates that carbon monoxide reacts with oxygen and forms carbon dioxide gas.

By decreasing the volume of the container, the equilibrium shifts towards the right side of the reaction.

Ans: Part 1

The correct choice is A (To the right).

Part 2

The correct choice is B(to the left).

Part 3

The correct choice is A (To the right).

Answer 2

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