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Calcium Hydride (CaH2) Is So Reactive with Water That It \rightarrow

Question 55

Multiple Choice

Calcium hydride (CaH2) is so reactive with water that it can be used to remove traces of water from solvents other than water. If 24.6 g of calcium hydride is added to a large volume of solvent that contains 14.0 g of water, which of these remains, water or calcium hydride, after the reaction is complete? The reaction is:
CaH2(s) + 2H2O(l) \rightarrow Ca(OH) 2(s) + 2H2(g)


A) CaH2 will be left over.
B) Water will be left over.
C) Both will be completely consumed.
D) There is no way to tell.

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