N2(g) reacts with H2(g) in the Haber process, as shown in reaction 1.
reaction 1 N2(g) + 3H2(g) ⇌ 2NH3(g) ∆H = -x kJ mol-1
Table 2.1 shows the different conditions used to produce three equilibrium mixtures, A, B and C.
Table 2.1
initial molar ratio of N2 : H2 added 1:3 1:3 1:3
temperature/°C 500 500 1000
pressure/atm 1000 1000 1000
iron present in mixture no yes no
percentage yield of NH3(g) at equilibrium 58 X y

Question

N2(g) reacts with H2(g) in the Haber process, as shown in reaction 1.
reaction 1 N2(g) + 3H2(g) ⇌ 2NH3(g) ∆H = -x kJ mol-1
Table 2.1 shows the different conditions used to produce three equilibrium mixtures, A, B and C.
Table 2.1
initial molar ratio of N2 : H2 added     1:3    1:3    1:3
temperature/°C                         500    500    1000
pressure/atm                           1000   1000   1000
iron present in mixture                no     yes    no
percentage yield of NH3(g) at equilibrium  58     X      y

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