问答题 Which of the following will react fastest(produce most product in a given time) and which will react at the highest rate? (a) 1 mol of A and 1 mol of B in a 1 L vessel; (b) 2 mol of A and 2 mol of B in a 2 L vessel; (c) 0.2 mol of A and 0.2 mol of B in a 0.1 L vessel.

【正确答案】Fastest, (b). Since there is more reactant present, there will be more product produced per unit time. The highest rate, the greatest change in concentration per unit time,is(e), simply because the vessel with the greatest concentration will al so experience the greatest change in concentration per unit time.

【答案解析】