Nitric acid

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Types of bonds present in nitric acid

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Covalent bond and coordinate bond

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Nitric acid decomposes to give:

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Nitrogen dioxide, water, oxygen (NO2, H2O, O2)

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REACTION OF LAB PREPARATION OF NITRIC ACID: Options: KNO3+H2SO4--> KHSO4+HNO3, NANO3+H2SO4-->NAHSO4+HNO3

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KNO3+H2SO4--> KHSO4+HNO3, NANO3+H2SO4-->NAHSO4+HNO3

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Ratio of air and ammonia in catalytic chamber is:

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10:1, 10:1

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CATALYST AND TEMPERATURE IN OSTWALD PROCESS:-

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PLATINUM AT 800 DEGREE C, Pt,800oc

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ALL GLASS APPARATUS IS USED BECAUSE :-

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NITRIC ACID VAPOURS ARE CORROSIVE AND CORRODE CORK RUBBER.

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Why are gases cooled before entering the oxidation chamber?

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Low temperature favors oxidation of nitric oxide to nitrogen dioxide. At high temperature, nitrogen dioxide decomposes.

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Name and colour of the acid formed when nitric acid reacts with protein of the skin.

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Xanthoproteic acid; Yellow

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COLOUR OF COMMERCIAL NITRIC ACID AND REASON

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YELLOWISH BROWN DUE TO DISSOLVED NITROGEN DIOXIDE

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CONC HCL CANNOT BE USED IN PLACE OF CONC H2SO4 IN LAB PREPARATION

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HCL IS MORE VOLATILE THAN HNO3 AND HNO3 VAPOURS WILL CARRY HCL VAPOURS, CONC H2SO4 IS NON VOLATILE