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प्रश्न
Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?
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
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
Ammonia is used in the Ostwald process.
What is the ratio of ammonia and air taken in this process?
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Name the Following:
Product obtained by heating concentrated nitric acid.
Choose the correct answer from the option given below :
Nitric acid on standing develops brownish colour which may be attributed to the presence of :
Fill in the blank with appropriate word/words.
98% nitric acid is obtained by distilling 68% nitric acid with ________ under ______
Explain the following :
An all glass apparatus is used in the laboratory preparation of nitric acid.
What happens when
NH3 solution is added to CuSO4 solution drop by drop and then in excess.
From the following list of substances, choose one substance in the case which matches the description given below:
Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A Substance that gives off only oxygen when heated.
Give a balanced equation for the following reaction:
Copper reacts with concentrated nitric acid.
