1.

50.0 kg of N, (g) and 10.0 kg of H, (g) aremixed to produce NH, (g). Calculate theNH, (g) formed. Identify the limitingreagent in the production of NH, in thissituation.

Answer»

Let us write the balanced equationN2 + 3H2 → 2NH3Now calculate the number of molesNumber of moles of N2 = 50 kg of N2 = 50 X 10 3 g/1 kg x 28g = 17.86 x 10 2 mole

Number of moles of H2 = 10 kg of N2 = 10 X 103 g/ 1 kg x 2 = 4.96X 103 mol

According to the above equation 1 mole of N2 reacts with 3 moles H2.That is 17.86 x 10 2 mole of N2 reacts with ------moles of H2= 3/1 X 17.86 x 10 2 = 5.36 x 103 moles.Here we have 4.96X 103 mol of hydrogen. Hence Hydrogen is the limiting reagent.Let us calculate the amount ammonia formed by reacting 4.96X103 moles Hydrogen 3 moles of hydrogen -------2 moles of NH34.96 x103 moles Hydrogen -----?= 4.96 x103 X ⅔= 3.30 x 103 moles of NH3



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