gas stoichiometry

label Chemistry
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What volume of hydrogen gas is produced when 81.6 g of sodium reacts completely according to the following reaction at 25 °C and 1 atm?

sodium (s) + water(l)sodium hydroxide (aq) + hydrogen(g)

_____  liters hydrogen gas

Feb 24th, 2015

mol of Na = 81.6/23 =3.548

mol of H2 = 3.548 and

mass of H2 = 3.548*2 = 7.096 grams

so V = nRT/P  = 3.548* 0.08206*298/1 = 86.762 liters

Feb 24th, 2015

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Feb 24th, 2015
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