5 (a) Complete and balance the chemical equation for the production of ammonia from nitrogen and hydrogen - AQA - GCSE Chemistry - Question 5 - 2014 - Paper 3
Question 5
5 (a) Complete and balance the chemical equation for the production of ammonia from nitrogen and hydrogen.
$$N_2 + 3H_2 \rightleftharpoons 2NH_3$$
5 (b) Figure 5 s... show full transcript
Worked Solution & Example Answer:5 (a) Complete and balance the chemical equation for the production of ammonia from nitrogen and hydrogen - AQA - GCSE Chemistry - Question 5 - 2014 - Paper 3
Step 1
Complete and balance the chemical equation for the production of ammonia from nitrogen and hydrogen.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
N2+3H2⇌2NH3
Step 2
Use the information in Figure 5 to complete the sentence.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The temperature on the graph that gives the highest yield of ammonia is 400 °C.
Step 3
Why is a temperature much lower than 450 °C not used for the Haber process?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
A much lower temperature is not used because the rate of reaction would be too slow for the process to be economically viable.
Step 4
Draw a ring around the pressure that gives the highest yield of ammonia.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Draw a ring around 400 atmospheres on the graph.
Step 5
Why is a pressure lower than 200 atmospheres not used for the Haber process?
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
A pressure lower than 200 atmospheres is not used because it would result in a lower yield of ammonia.
Step 6
Explain how ammonia is separated from unreacted nitrogen and hydrogen in the Haber process.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Ammonia is separated by cooling the gases. The ammonia liquefies while the unreacted nitrogen and hydrogen remain as gases.
