gas stoichiometry 2

Chemistry
Tutor: None Selected Time limit: 1 Day

How many grams of sodium are needed to produce 6.44 L of hydrogen gas according to the following reaction at 25 °C and 1 atm?

sodium (s) + water(l)sodium hydroxide (aq) + hydrogen(g) ___ g Na.

Feb 24th, 2015

nH2  = 1*6.44/0.0821*298 = 0.263 mol H2

Balance the equation

2 Na + 2 H2O   =====> 2 NaOH + H2

0.263 mol H2 * 2 mol Na / 1 mol H2 = 0.526 mol Na * 23 g / mol = 12.11 g Na

Feb 24th, 2015

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