将溶液(或气体)X逐渐加入(或通入)到一定量Y溶液中,产生沉淀

将溶液(或气体)X逐渐加入(或通入)到一定量Y溶液中,产生沉淀的质量与加入X的物质的量关系如右图,符合图中情况的一组物质是 

A

B

C

D

X

Ba(HCO3)2

溶液

Na2CO3

溶液

KOH

溶液

CO2

气体

Y

NaOH

溶液

CaCl2

溶液

Mg(HSO4)2

溶液

石灰水

答案

C

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