A scientist introduces 20 moles of N2 gas and 50 moles of H2 gas into a container of volume 10 dm'. The container is sealed and the gases react and reach equilibrium at 450 °C according to the following balanced chemical equation: 3.5 N2(g) + 3H2(g) 2NH3(g) AH < 0 At equilibrium, the concentration of nitrogen gas is 1,95 mol.dm. 3.5.1 Write down the expression for the equilibrium constant (K) for this reaction. 3.5.2 Calculate the number of moles of nitrogen gas which reacted. 3.5.3 Calculate the equilibrium constant, Ke, for this reaction at 450 °C. State what information your answer for K indicates about the yield of ammonia at 450 °C. 3.5.4

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A scientist introduces 20 moles of N2 gas and 50 moles of H2 gas into a container
of volume 10 dm'. The container is scaled and the gases react and reach equilibrium
at 450 °C according to the following balanced chemical equation:
3.5
N2(g) + 3H2(g) 2NH3(g)
ΔΗ< 0
At equilibrium, the concentration of nitrogen gas is 1,95 mol.dm¯³.
3.5.1
Write down the expression for the equilibrium constant (K.) for this reaction.
3.5.2
Calculate the number of moles of nitrogen gas which reacted.
3.5.3
Calculate the equilibrium constant, Kc, for this reaction at 450 °C.
State what information your answer for K. indicates about the yield of
ammonia at 450 °C.
3.5.4
Transcribed Image Text:A scientist introduces 20 moles of N2 gas and 50 moles of H2 gas into a container of volume 10 dm'. The container is scaled and the gases react and reach equilibrium at 450 °C according to the following balanced chemical equation: 3.5 N2(g) + 3H2(g) 2NH3(g) ΔΗ< 0 At equilibrium, the concentration of nitrogen gas is 1,95 mol.dm¯³. 3.5.1 Write down the expression for the equilibrium constant (K.) for this reaction. 3.5.2 Calculate the number of moles of nitrogen gas which reacted. 3.5.3 Calculate the equilibrium constant, Kc, for this reaction at 450 °C. State what information your answer for K. indicates about the yield of ammonia at 450 °C. 3.5.4
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