皮皮学，免费搜题
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【单选题】
100mL 6mol·L -1 H 2 SO 4 跟过量锌粉反应，一定温度下，为了减缓反应进行的速率，但又不影响生成氢气的总量，可向反应物中加入适量 [     ]
A.
碳酸钠(固体)
B.
水
C.
硫酸钾(固体)
D.
硫酸铵(固体)
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