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Q.

The hydride ion, H-  is a stronger base than hydroxide ion, OH-, which of the following reactions will occur if sodium hydride is dissolved in H2O?

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a

H+H2O  H3O+aq+e

b

H+H2O  OHaq+H2g

c

H++H  H2Ol

d

H+H2O  H3Oaq

answer is B.

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Detailed Solution

NaH+H2O  NaOHaq+H2g. The reason for this reaction is hydride ion is a very strong base and abstracts hydrogen ion from water and converts itself into hydrogen.

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