Chemistry
State two relevant observations for : Lead nitrate crystals are heated in a hard glass test tube.
Nitric Acid
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Answer
Reddish brown nitrogen dioxide gas is evolved.
Buff coloured residue of PbO is obtained in the test tube.
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Related Questions
Give a balanced equation for the reaction: Dilute nitric acid and copper carbonate.
Identify the gas evolved when:
(i) Sulphur is treated with concentrated nitric acid.
(ii) A few crystals of KNO3 are heated in a hard glass test tube.
Give a balanced equations for: Oxidation of carbon with concentrated nitric acid.
Fill in the blank from the choices given in the bracket:
Cold, dil. nitric acid reacts with copper to form …………… [Hydrogen, nitrogen dioxide, nitric oxide].