Photo AI
The graph in part (A) shows the relationship between % yield of ammonia and pressure (in atmospheres) at two different temperatures (500°C and 550°C) - HSC - SSCE Chemistry - Question 13 - 2006 - Paper 1
Question 13
The graph in part (A) shows the relationship between % yield of ammonia and pressure (in atmospheres) at two different temperatures (500°C and 550°C). Part (B) illus... show full transcript
Worked Solution & Example Answer:The graph in part (A) shows the relationship between % yield of ammonia and pressure (in atmospheres) at two different temperatures (500°C and 550°C) - HSC - SSCE Chemistry - Question 13 - 2006 - Paper 1
Step 1
(A) Analyze the relationship
Answer
The graph in part (A) indicates that as the pressure increases, the % yield of ammonia also increases. Specifically, at higher temperatures (550°C compared to 500°C), the yield is relatively improved across all pressures. This suggests that higher pressure favors the formation of ammonia according to Le Chatelier's principle, shifting the equilibrium towards the production of ammonia.
Step 2
(B) Compare yields at different temperatures
Answer
In part (B), the yield of ammonia is noticeably higher at 550°C than at 500°C. This highlights that, while higher temperatures typically favor the reverse reaction (i.e. the decomposition of ammonia), their effect in combination with high pressure still results in higher yields of ammonia overall. Therefore, optimal conditions for maximum ammonia yield would likely involve a high pressure environment coupled with a higher temperature.