Chemistry
Name the products formed when:
(a) carbon and conc. nitric acid is heated,
(b) dilute HNO3 is added to copper.
Answer
(a) The products formed when carbon and conc. nitric acid is heated are carbon dioxide, nitrogen dioxide and water
C + 4HNO3 ⟶ CO2 + 2H2O + 4NO2
(b) The products formed when dilute HNO3 is added to copper are copper nitrate, nitric oxide and water
3Cu + 8HNO3 ⟶ 3Cu(NO3)2 + 4H2O + 2NO
Related Questions
Give reasons for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitrate should not be heated very strongly above 200°C.
(a) Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3. State the reason.
(b) What is passive iron? How is passivity removed?
Give two chemical equations for each of the following:
(a) Reactions of nitric acid with non-metals.
(b) Nitric acid showing as acidic character.
(c) Nitric acid acting as oxidising agent.
Write balanced equations and name the products formed when:
(a) Sodium hydrogen carbonate is added to nitric acid.
(b) Cupric oxide reacts with nitric acid
(c) Zinc reacts with dilute nitric acid
(d) Concentrated nitric acid is heated