Chemistry
Give reasons for the following:
Nitric acid is a stronger oxidising agent in the conc. state of the acid than in the dilute state.
Answer
The oxidizing property of nitric acid is based on the fact that when nitric acid undergoes decomposition, it yields nascent oxygen, which is very reactive.
Due to the ease with which conc. HNO3 decomposes to give nascent oxygen, it acts as a powerful oxidising agent compared to nitric acid in dilute state.
Related Questions
Give reasons for the following:
Nitric acid finds application in the purification of gold.
Give reasons for the following:
Nitric acid affects the skin if it accidently falls on it, staining the skin yellow.
Answer the following questions pertaining to the brown ring test for nitric acid:
![Answer the following questions pertaining to the brown ring test for nitric acid. Name the chemical constituent of the brown ring Y. Which of the two solutions – iron [II] sulphate or conc. sulphuric acid, do X and Z represent. State why the unstable brown ring decomposes completely on disturbing the test tube. Give a reason why the brown ring does not settle down at the bottom of the test tube. Name the gas evolved when acidified iron [II] sulphate reacts with dilute nitric acid in the brown ring test. Study of Nitric Acid, Simplified Chemistry Dalal Solutions ICSE Class 10.](https://cdn1.knowledgeboat.com/img/scd10/brown-ring-test-simplified-chemistry-icse-class-10-649x1280.jpg)
- Name the chemical constituent of the brown ring 'Y'.
- Which of the two solutions – iron [II] sulphate or conc. sulphuric acid, do 'X' and 'Z' represent.
- State why the unstable brown ring decomposes completely on disturbing the test tube.
- Give a reason why the brown ring does not settle down at the bottom of the test tube.
- Name the gas evolved when acidified iron [II] sulphate reacts with dilute nitric acid in the brown ring test.
Give reasons for the following:
The yellow colour of nitric acid obtained in the laboratory is removed by bubbling air through it.