In the reaction: 2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen (H2
) are produced if 5.2 mol of Na are available?
2Na + 2H2O → 2NaOH+ H2
According to the reaction, 2 moles of Na reacts to produce 1 mole of H2.
n(H2) = n(Na)/2 = 5.2 mol / 2 = 2.6 mol
Finally, the mass of H2 produced:
m(H2) = n(H2) × Mr(H2) = 2.6 mol × 2 g/mol = 5.2 g
Answer: 5.2 g