Question

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ts) Given the following reaction in a non-rigid, but closed container: Heat +CaCO3(-) + H2O + CO2(g) + 2HCO3"(aq) + Cat2(aq) k [HCO₃ ] [ca [CO₂] Which way will the equilibrium shift if: Left Right No Shift CaCO3() is added to the container Left Right No Shift Arg) is added to the container more moles - undo CO2 (g) is removed from the container Right No Shift Left Left Right No Shift The container is heated TPV Ca(NO3)2 (s) is added to the container Soluble Left Right No Shift at ap vv

Answer 1

The given reaction takes place in a closed container. That means there is only heat is exchange between the system and surrounding and there is no exchange of matter.

The given reaction is Heat + CaCO3 + H2O + CO2 ------------> 2HCO3 - + Ca+2 is present at equilibrium

Now the change in direction of equilibrium due to change in different conditions will be determined according to Li-Chatelier's Principle

1-

CaCO3 is added to the container- According to Li-Chatelier's Principle, if we increase the concentration of the reactant, the equilibrium shifts to right to form more product and re-establish the equilibrium.

Since the added CaCO3 is a reactant, thus the equilibrium shifts to right.

2-

Ar(g) is added to the container- Since the system is closed and there is no exchange between the system and surrounding, And the volume of the system remains constant.

According to Li-Chatelier's Principle, when an inert gas is added to the system in equilibrium at constant volume there will be no effect on the equilibrium.

3-

CO2 is removed from the container- According to Li-Chatelier's Principle, if we decrease the concentration of the product, the equilibrium shifts to right to form more product and re-establish the equilibrium.

Since the removed CO2 is a product, thus the equilibrium shifts to right.

4-

In the given reaction, heat is written in the reactant side. Thus this is an Endothermic reaction. That means heat also act as ac reactant. Thus when we add heat or heat the container, equilibrium shifts to right to form more product and re-establish the equilibrium.

5-

When Ca(NO3)2 is added. - We know Ca(NO3)2 is soluble in water. Thus when it is adde to the solution, it dissociates as- Ca(NO3)2 ------------> Ca+2 + 2 NO3-

That means due to addition of Ca(NO3)2, amount of Ca+2 increases.

Now Since the added Ca+2 is a product, thus the equilibrium shifts to left to form more reactant and re-establich the equilibrium.