Question

When sodium metal is added to water, the following reaction occurs:

Answer 1

Answer:

d. n H2(g) = 0.034 mol

Explanation:

• 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)

                              2 - Na - 2

                              4 - H - 4

                               2 - O - 2

∴ n Na(s) = 0.068 mol

⇒ n H2(g) = ( 0.068 mol Na(s) )( mol H2(g) / 2 mol Na(s) )

⇒ n H2(g) = 0.034 mol