CBSE Class 11-science Answered
Justify that the reaction 2Na(s) + H2(g) → 2NaH(s) is a redox reaction.
Asked by Topperlearning User | 13 Jun, 2016, 04:12: PM
Expert 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)
H2(s) + 2e- → 2H- (reduction) (gain of electrons)
Overall redox reaction,
2Na(s) + H2(g) → 2Na+ H-(s)
Answered by | 13 Jun, 2016, 06:12: PM
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