Answered

IDNLearn.com is the perfect place to get answers, share knowledge, and learn new things. Ask your questions and get detailed, reliable answers from our community of experienced experts.

(c) Ammonia reacts with oxygen at high temperatures in the presence of a suitable catalyst to form nitric oxide, NO.
[tex]\[
4 NH_3(g) + 5 O_2(g) \rightarrow 4 NO(g) + 6 H_2O(g)
\][/tex]

(i) Explain how this chemical equation shows ammonia acting as a reducing agent.
[tex]\[\qquad \][/tex]
[1]

(ii) Suggest a suitable catalyst for the reaction from the list of metals. Give a reason for your answer.
- aluminium
- calcium
- platinum
- potassium
- sodium

Suitable catalyst: [tex]\[\qquad \][/tex]
Reason: [tex]\[\qquad \][/tex]
[2]

Sagot :

GinnyAnsweridn
Let's break down the problem step-by-step:

(i) Explain how this chemical equation shows ammonia acting as a reducing agent.

The given chemical reaction is:
[tex]\[ 4 \text{NH}_3(\text{g}) + 5 \text{O}_2(\text{g}) \rightarrow 4 \text{NO}(\text{g}) + 6 \text{H}_2\text{O}(\text{g}) \][/tex]

In this reaction, ammonia ([tex]\(\text{NH}_3\)[/tex]) is transforming into nitric oxide ([tex]\(\text{NO}\)[/tex]).

- As [tex]\(\text{NH}_3\)[/tex] is converted to [tex]\(\text{NO}\)[/tex], it loses hydrogen atoms and gains oxygen atoms.
- Losing hydrogen atoms and gaining oxygen atoms indicates that ammonia is being oxidized.
- Oxidation is the process where a substance loses electrons.
- In a redox (reduction-oxidation) reaction, the substance that is oxidized acts as a reducing agent, as it donates electrons to another substance.

Therefore, ammonia ([tex]\(\text{NH}_3\)[/tex]) acts as a reducing agent in this reaction because it donates electrons (gets oxidized) in the process.

(ii) Suggest a suitable catalyst for the reaction from the list of metals. Give a reason for your answer:

List of metals: aluminium, calcium, platinum, potassium, sodium

Suitable catalyst: Platinum

Reason: Platinum is highly efficient and stable in various chemical environments. It is commonly used as a catalyst in chemical reactions due to its ability to increase the reaction rate without being consumed in the process. Its high efficiency and stability make it a suitable choice for facilitating the reaction between ammonia and oxygen to produce nitric oxide and water.
Thank you for using this platform to share and learn. Keep asking and answering. We appreciate every contribution you make. Thank you for trusting IDNLearn.com. We’re dedicated to providing accurate answers, so visit us again for more solutions.