Consider the following reaction at equilibrium. What effect will adding some C have on the system?...

Consider the following reaction at equilibrium. What effect will adding some C have on the system? CO2(g) + C(graphite) ⇌ 2 CO(g) Question 1 options: A) No effect will be observed since C is not included in the equilibrium expression. B) The equilibrium constant will decrease. C) The reaction will shift to the left in the direction of reactants. D) The equilibrium constant will increase. E) The reaction will shift to the right in the direction of products.

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Expert Solution

Consider the following reaction at equilibrium.

What effect will adding some C have on the system

CO2(g) + C(graphite) ⇌ 2 CO(g)

First, let us state the Le Chatelier principle which deals with changes in an equilibrium:

The statement is as follows:

If any equilibrium is disturbed, that is, change in conditions such as P,T, concentration, partial pressure, etc.., the system will counterbalance such change in order to favour the system's equilbirium.

Change in concentration
Change in pressure
Change in temperature

CO2(g) + C(graphite) ⇌ 2 CO(g)

A) No effect will be observed since C is not included in the equilibrium expression. TRUE

B) The equilibrium constant will decrease. --> Kc is constant and independent on concentrations

C) The reaction will shift to the left in the direction of reactants. --> False, since CO2 and CO are in equilibrium

D) The equilibrium constant will increase. --> false, Kc can't increase

E) The reaction will shift to the right in the direction of products. ---> false, no effect CO and CO2 re in equilbirum

queen_honey_blossom answered 1 year ago

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