If 3.95 g of N2H4 reacts and produces 0.750 L of N2, at 295 K and 1.00 atm, what is the percent yield of the reaction?

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SacoJijWinetinejad SacoJijWinetinejad

15-08-2016
Chemistry

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If 3.95 g of N2H4 reacts and produces 0.750 L of N2, at 295 K and 1.00 atm, what is the percent yield of the reaction?

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Hussain514 Hussain514 · Answer 1 · 2016-08-18T14:15:25+02:00

Molar mass of N2H4 = 32 grams/mole
3.95 grams of N2H4 = 3.95/32
= 0.123 moles

This will produce 0.123 moles of N2
Now,
From the gas law equation.
P.V = n x R x T
P = 1 atm (given)
V = 0.123 x 0.082057 x 295
V = 2.97 Liters

Theoretical yield = 2.97 Liters.
Actual yield = 0.750 Liters

percentage yield = (0.75/2.97) x 100 %
= 25.25 %