Question

How many moles of sodium will react with water to produce 2.0 mol of hydrogen in the following reaction?

2Na(s) + 2H20(1) - 2NaOH(aq) + H2(g)

Answer 1

Answer: 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen

Step-by-step explanation:

The balanced chemical equation is:

`2Na(s)+2H_2O(l)\rightarrow 2NaOH(aq)+H_2(g)`

According to stoichiometry :

1 mole of
`H_2` is produced by = 2 moles of
`Na`

Thus 2.0 moles of
`H_2` are produced by =
`(2)/(1)* 2.0=4.0moles` of
`Na`

Thus 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen