Sodium Hydrogen Carbonate Decomposes Above 110°C to Form Sodium Carbonate,water,and

question 29

Multiple Choice

Sodium hydrogen carbonate decomposes above 110°C to form sodium carbonate,water,and carbon dioxide.
2NaHCO₃(s)
Na₂CO₃(s) + H₂O(g) + CO₂(g)
One thousand grams of sodium hydrogen carbonate are added to a reaction vessel,the temperature is increased to 200°C,and the system comes to equilibrium.What happens in this system if another 50 g of sodium carbonate are now added?

• A)The partial pressure of carbon dioxide will increase.
• B)The partial pressure of carbon dioxide will decrease.
• C)The partial pressure of carbon dioxide will be unchanged.
• D)The amounts of all products will be greater when equilibrium is reestablished.
• E)None of these conclusions is justified without knowing the equilibrium constant.

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