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08-08-2016
Chemistry

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Write the half reactions for 2Li + H2 -> 2LiH.

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09-08-2016

Li ----> Li+ + e-(oxidation)
now comes
Reduction:

H2 + 2e- ------> 2H
now by
Multiplying (1) by 2 and adding in (2) will give you the required equation..
..

2Li + H2 ---------> 2LiH
half reaction are either oxidation or reduction

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