Answer:
Option C Removing Na₂CO₃
Option E Heating the container.
Step-by-step explanation:
The equation for the reaction is given below:
2NaHCO₃ (s) <=> Na₂CO₃ (s) + CO₂ (g) + H₂O (g)
Enthalpy change (ΔH) = 136 KJ
To obtain more CO₂ do the following:
1. Add more NaHCO₃
From chemical equilibrium, adding more NaHCO₃ means the reactant has increase. Thus, it (the reactant) will react to form more product (CO₂)
2. Removing any of the products. Removing any of the products implies that more reactants are in the reaction vessel than the product. Thus, the reactants will react to produce more products (CO₂)
3. Heating the container. Heating the container will lead to an increase in the temperature of the reaction. Since the enthalpy change (ΔH) is positive it means the reaction is endothermic. Thus, heating the container i.e increasing the temperature will favours the forward reaction i.e more products will be obtained.
NOTE: Pressure has no effect in the reaction system since there is no gaseous reactants.
Considering the options given above, C and E gives the correct answer to the question.