Question

. In the equation Na+H2---> 2 NaH Which species undergoes reduction?


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Answer 1

$\huge\fcolorbox{aqua}{lime}{Answer}$

Since NaH is an ionic compound, it may be

represented as Na+ H+ (s)

2Na(s) + H2(g) → 2Na+ H

This reaction can be split into following two half

reactions:

Na(s) - (Na+)+ e- (oxidation) (loss of electrons)

2H* (reduction) (gain of electrons)

Overall redox reaction,

2Na(s) + H2(g) - 2Na+ H (s)

H2(s) + 2e