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प्रश्न
Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?
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उत्तर
At high temperature, nitric acid decomposes and the glass apparatus may get damaged. Sodium formed at a higher temperature forms a hard crust which sticks to the walls of the retort.
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संबंधित प्रश्न
Name the Following:
Two coloured nitrates.
Explain with the help of a balanced equation, the brown ring test for nitric acid.
What do you observe when?
Hydrogen sulphide is bubbled through conc. HNO3?
Complete and balance the following equation :
C + HNO3 → ___________
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Name (formula is not acceptable) the gas produced in the following reaction:
By the action of concentrated nitric acid on copper.
Identify the gas evolved when sulphur is treated with concentrated nitric acid.
Write the equation for the reaction of dilute nitric acid with copper.
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
- Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
- Write an equation to show how nitric acid undergoes decomposition.
- Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.
A dilute acid B does not normally give hydrogen when reacted with metals but does give a gas when it reacts with copper. Identify B. Write the equation with copper.
