# What is the balanced equation for this reaction: Na + H_2O -> NaOH + H_2. What is the submicroscopic view of the equation?

May 9, 2017

$N a \left(s\right) + {H}_{2} O \left(l\right) \rightarrow N a O H \left(a q\right) + \frac{1}{2} {H}_{2} \left(a q\right) \uparrow$

#### Explanation:

Sodium metal is a powerful enuff reductant to reduce the water molecule to give dihydrogen gas. The is clearly an example of a redox equation:

$N a \rightarrow N {a}^{+} + {e}^{-}$ $\left(i\right)$

${H}_{2} O + {e}^{-} \rightarrow \frac{1}{2} {H}_{2} \left(g\right) \uparrow + H {O}^{-}$ $\left(i i\right)$

Overall........................$\left(i\right) + \left(i i\right) :$

Na(s) + H_2(l) rarr 1/2H_2(g) + Na^(+)""^(-)OH(aq)