The amounts of reactants decrease, stay the same or increase (a) C2H2(g) + H2O(g

Question

   The amounts of reactants decrease, stay the same or increase

(a) C2H2(g) + H2O(g) CH3CHO(g) delta H rxn degree = -151 kJ The amounts of reactants decrease. The amounts of reactants stay the same. The amounts of reactants increase. delta H rxn degree = -451 kJ The amounts of reactants stay the same. The amounts of reactants increase. The amounts of reactants decrease. (exothermic) The amounts of reactants decrease. The amounts of reactants stay the same. The amounts of reactants increase. (d) (endothermic)

Explanation / Answer

(a) The reaction is exothermic so if T increases, the amount of reactants increase. If T decreases, the amount of products increase.

There a more moles if the left side than in the right side. If P increase, the amount of products increase. If P decrease, the amount of reactants increase.

(b) The reaction is exothermic so if T increases, the amounts of reactants increase. If T decreases, the amounts of products increase.

There is the same amounts of moles in both sides. If P increase or decreases, nothing happens.

(c) The reaction is exothermic so if T increases, the amounts of reactants increase. If T decreases, the amounts of products increase.

There a more moles if the left side than in the right side. If P increases, the amounts of products increase. If P decrease, the amounts of reactants increase.

(d) The reaction is endothermic so if T increases, the amounts of products increase. If T decreases, the amounts of products decrease.

There a more moles if the right side than in the left side. If P increases, the amounts of reactants increase. If P decrease, the amounts of products increase.

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