Chemistry
Fill in the blanks using the appropriate words given in the bracket below:
[sulphur dioxide, nitrogen dioxide, nitric oxide, sulphuric acid]
(i) Cold, dilute nitric acid reacts with copper to give ……………
(ii) Hot, concentrated nitric acid reacts with sulphur to form ……………
Nitric Acid
ICSE 2016
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Answer
(i) Cold, dilute nitric acid reacts with copper to given nitric oxide.
(ii) Hot, concentrated nitric acid reacts with sulphur to form sulphuric acid and nitrogen dioxide.
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From the list of the following salts — AgCl, MgCl2, NaHSO4, PbCO3, ZnCO3, KNO3, Ca(NO3)2. State the salt which on heating, evolves a brown coloured gas.
Write balanced chemical equation for: Action of hot and concentrated nitric acid on copper.
Write the balanced chemical equation for –
(i) Action of cold and dilute nitric acid on copper.
(ii) Action of conc. nitric acid on sulphur.
(iii) Laboratory preparation of nitric acid.
Name the gas that is produced.
(i) When sulphur is oxidized by concentrated nitric acid.
(ii) During action of cold and dilute ntric acid on copper.