20℃时向50mL 1mol/L的碳酸钠溶液中滴加1mol/L的盐酸75mL,在液面上收集

20℃时向50mL 1mol/L的碳酸钠溶液中滴加1mol/L的盐酸75mL,在液面上收集所产生的气体,这些气体经干燥后换算成标准状况下的体积为

A. 840mL                            B. 560mL

C. 小于840mL,大于560mL             D. 略小560mL

答案

D

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