Chemistry
Name three chemical products manufactured from nitric acid. Give two general uses of HNO3.
Nitric Acid
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Answer
Three chemical products manufactured from nitric acid are:
- Tri-nitro toluene [C7H5(NO2)3]
- Tri-nitro cellulose [C6H7O2(NO2)3]n
- Tri-nitro glycerine [C3H5O3(NO2)3]
Two general uses of nitric acid are:
- For etching designs on copper and brassware
- In purification of gold.
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State how addition of nitric acid to acidified FeSO4, serves as a test for the former.
Select the letters A, B, C, D or E, which form the gaseous products of the reactions from 1 to 5.
A: Nitrogen dioxide only
B: Nitric oxide only
C: Hydrogen
D: Nitrogen dioxide and oxygen
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- Reaction of sulphur with conc. nitric acid.
- Reaction of zinc with dil. nitric acid.
- Reaction of carbon with conc. nitric acid.
- Heat on nitric acid.
Select the correct word from the list in bracket to complete each statement.
- The oxidised product obtained on reaction of H2S gas with dil. HNO3 is ……………. [sulphur dioxide / sulphur / sulphuric acid].
- Aqua regia is a mixture of one part of …………… and three parts of …………… [conc. hydrochloric acid / conc. nitric acid] in which nitric acid …………… [reduces/oxidises] hydrochloric acid to chlorine.
- Pure conc. nitric acid or fuming nitric acid renders the metal …………… [zinc/copper/iron] passive or inactive.
- A mineral acid obtained from conc. nitric acid on reaction with a non-metal is …………… [hydrochloric acid / sulphuric acid / carbonic acid].
- The reaction of …………… [calcium carbonate / calcium oxide / calcium sulphite] with dilute nitric acid is an example of a neutralization reaction.