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Study the following chemical reaction : ...

Study the following chemical reaction :
`2 Na(s) + 2 H_2O (l) rarr 2NaOH (aq) + H_2(g) uarr`
The reducing agent in this reaction is:

A

`Na`

B

`H_2O`

C

`NaOH`

D

`H_2`

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