Chemistry
Name :
(a) a nitrate of metal which on heating does not give nitrogen dioxide.
(b) a nitrate which on heating leaves no residue behind.
(c) a metal nitrate which on heating is changed into metal oxide.
(d) a metal nitrate which on heating is changed into metal.
(e) a solution which absorbs nitric oxide.
(f) the oxide of nitrogen which turns brown on exposure to air.
(g) the gas produced when copper reacts with conc. HNO3.
Nitric Acid
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Answer
(a) Sodium nitrate
2NaNO3 2NaNO2 + O2↑
(b) Ammonium nitrate
NH4NO3 N2O + 2H2O
(c) Calcium nitrate
2Ca(NO3)2 2CaO + 4NO2 + O2
(d) Silver nitrate
2AgNO3 2Ag + 2NO2 + O2
(e) Freshly prepared ferrous sulphate
6FeSO4 + 3H2SO4 + 2HNO3 (dil.) ⟶ 3Fe2(SO4)3 + 4H2O +2NO
FeSO4 + NO ⟶ FeSO4.NO
(f) Nitric oxide
2NO + O2 ⟶ 2NO2 (brown gas)
(g) Nitrogen dioxide
Cu + 4HNO3 ⟶ Cu(NO3)2 + 2H2O + 2NO2
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Related Questions
Match the following :
Column I Column II (a) A substance which gives off only oxygen when heated. (i) Zinc nitrate (b) A substance which on heating decomposes into nitrous oxide and steam. (ii) Sodium nitrate (c) A substance which gives off oxygen and nitrogen dioxide when heated. (iii) Lead nitrate (d) A substance which on heating leaves yellow residue. (iv) Ammonium nitrate Choose the most appropriate option from the list given below to fill in the blanks.
[NO, Nessler's reagent, NO2, Iron, brown ring, magnesium, Haber's, Ostwald, Iron (II) sulphate, Hydrogen, Iron (III) sulphate](a) A yellow non-metal, sulphur reacts with nitric acid to liberate …………… .
(b) …………… test is used to identify the nitrate radical.
(c) Dilute HNO3 reacts with copper evolving …………… gas.
(d) Nitric acid is obtained on a large scale by the …………… process and the catalyst used is …………… .
(e) In …………… test, freshly prepared …………… solution is used.
(f) Nitric acid in a very dilute form reacts with …………… to form …………… .
Identify the gas evolved when:
(i) Sulphur is treated with conc. nitric acid.
(ii) A few crystals of KNO3 are heated in a hard glass test tube.
Identify the acid which is :
(a) used for the preparation of non-volatile acid.
(b) prepared by catalytic oxidation of ammonia.