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Title: Gaseous nitrogen and hydrogen undergo a reaction to form gaseous ammonia (the Haber process).? Post by: bugaian on Feb 19, 2012 Write the chemical equation.
At a temperature of 400 degrees C and a total pressure of 250 atm, 0.720g of NH3 was produced by the reaction 2.80g N2, with excess H2. What is the percent yield of this reaction? Title: Gaseous nitrogen and hydrogen undergo a reaction to form gaseous ammonia (the Haber process).? Post by: mikeb on Feb 19, 2012 N2 + 3 H2 --> 2 NH3
moles of N2 = 2.80 / 28 = 0.100 (Mr of N2 = 28) expected moles of NH3 = 0.200 (1:2 ratio in equation) expected mass of NH3 = 0.200 * 17 = 3.40g (Mr of NH3 = 17) %yield = (0.720/3.40)*100 = 21.2% |