The equation describes an equilibrium reaction occurring in a closed system - HSC - SSCE Chemistry - Question 16 - 2015 - Paper 1
Question 16
The equation describes an equilibrium reaction occurring in a closed system.
$$X(g) + Y(g) \rightleftharpoons 4Z(g)$$
$$\Delta H = +58 \text{ kJ}$$
Under which se... show full transcript
Worked Solution & Example Answer:The equation describes an equilibrium reaction occurring in a closed system - HSC - SSCE Chemistry - Question 16 - 2015 - Paper 1
Step 1
Temperature (°C) = 50; Pressure (kPa) = 100
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Answer
At lower temperatures, the equilibrium shifts towards the exothermic direction, favoring the production of Z(g). However, the pressure is relatively low in this scenario.
Step 2
Temperature (°C) = 50; Pressure (kPa) = 200
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Answer
This scenario provides a higher pressure which would push the equilibrium towards the formation of Z(g) compared to (A).
Step 3
Temperature (°C) = 300; Pressure (kPa) = 100
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Answer
At this higher temperature, the reaction is less favorable for producing Z(g), and the lower pressure would not support the production effectively.
Step 4
Temperature (°C) = 300; Pressure (kPa) = 200
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Answer
This condition increases the pressure further; however, the high temperature would shift the equilibrium away from forming Z(g) due to the endothermic nature of the reaction.
