Sodium metal reacts with water to produce hydrogen gas

Last updated: 7/30/2022

Sodium metal reacts with water to produce hydrogen gas according to the following equation: 2Na(s) + 2H₂O(l) ⇒ 2NaOH(aq) + H₂(g) The product gas, H₂, is collected over water at a temperature of 25 °C and a pressure of 749 mm Hg. If the wet H₂ gas formed occupies a volume of 6.42 L, the number of moles of Na reacted was 1.9407 mol. The vapor pressure of water is 23.8 mm Hg at 25 °C.