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 the above conclusions is justified without knowing the equilibrium constant.
Correct Answer:
Verified
Correct Answer:
Verified
Q43: What is the mass-action expression, Q<sub>p</sub>, for
Q44: The equilibrium constant K<sub>c</sub> for the reaction
Q45: Nitric oxide and bromine were allowed to
Q48: Carbon monoxide and chlorine combine in an
Q49: Write the mass-action expression, Q<sub>c</sub>, for the
Q50: At high temperatures, carbon reacts with O<sub>2</sub>
Q51: The reaction system CS<sub>2</sub>(g) + 4H<sub>2</sub>(g) <img
Q52: The following reaction is at equilibrium at
Q85: If Q > K, more products need
Q88: In a chemical reaction, if the starting