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प्रश्न
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
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उत्तर
Commercial nitric acid is yellow in colour because of presence of nitrogen dioxide but when it is diluted with water, it turns colourless because nitrogen dioxide get dissolved in water.
संबंधित प्रश्न
Give a balanced chemical equation for Laboratory preparation of Nitric acid.
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Give reason for the following:
In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.
Give reason for the following:
Conc. Nitric acid renders iron passive.
Complete and balance the following equation :
HNO3 + FeSO4 + H2SO4 → ______________
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
Write the equation to show the reaction between the following:
Dilute nitric acid to produce carbon dioxide.
Identify the gas evolved when sulphur is treated with concentrated nitric acid.
Explain the following:
Concentrated nitric acid appears yellow when it is left standing in a glass bottle.
