Consider the equilibrium rxn Consider these facts: 1. The partial pressure of ox
ID: 964341 • Letter: C
Question
Consider the equilibrium rxn
Consider these facts:
1. The partial pressure of oxygen gas decreases whent he temperature of the rxn chamber is increased
2. Remember that AgNO3 is soluble in water, but AgCl is insoluble in water
which statements are true?
I. The rxn is endothermic
II. The rxn becomes spontaneous backwards when silver (I) nitrate is added to the equilibrium mixture
III. When the atmospheric volume of the rxn container is increased at equilibrium, the rxn becomes spontaneous forwards
IV. when the atmospheric volume of the rxn container is increased at equilibrium, the moles of liquid water increases
Consider the equilibrium rxn HCl (aq) + O_2(g) 2H_2O (l) + 2Cl_2 (g) Consider these facts: The partial pressure of oxygen gas decreases when the temperature of the rxn chamber is increased Remember that AgNO_3 is soluble in water, but AgCl is insoluble in water which statements are true The rxn is endothermic The rxn becomes spontaneous backwards when silver (I) nitrate is added to the equilibrium mixture When the atmospheric volume of the rxn container is increased at equilibrium, the rxn becomes spontaneous forwards when the atmospheric volume of the rxn container is increased at equilibrium, the moles of liquid water increasesExplanation / Answer
The partial pressure of oxygen gas decreases whent the temperature of the rxn chamber is increased.
The reaction shifts in forward direction. Hence the reaction is endothermic in nature.
When silver (I) nitrate is added to the equilibrium mixture, it reacts with chloride ions from HCl to form water insoluble silver chloride. Thus chloride ions are removed from the solution. The rxn becomes spontaneous backwards so that more and more HCl is produced which nullifies the effect of decrease in chloride ion concentration.
Number of moles of gaseous products is higher than the number of moles of gaseous reactants.
When the atmospheric volume of the rxn container is increased at equilibrium, total pressure and partial pressures decreases.
The rxn becomes spontaneous forwards which increases the number of moles of gaseous species.
Also the moles of liquid water increases as the equilibrium will shift to right.
Hence, all the statements are true.