Question

How many moles of hydrogen gas are produced when 0.066 mole of sodium is completely reacted? f 0.033 mol H2 g 0.099 mol H2 h 0.066 mol H2 j 0.022 mol H2

Answer 1

2Na(s) + 2H₂O(l) = 2NaOH(aq) + H₂(g)

n(NaOH)=0.066 mol

n(H₂)=n(NaOH)/2

n(H₂)=0.066/2=0.033 mol

0.033 mol