Chemistry
Heat on lead nitrate gives yellow lead [II] oxide, nitrogen dioxide and oxygen. Calculate the total volume of NO2 and O2 produced on heating 8.5 of lead nitrate. [Pb = 207, N = 14, O = 16]
Related Questions
Zinc blende [ZnS] is roasted in air. Calculate :
(a) The number of moles of sulphur dioxide liberated by 776 g of ZnS and
(b) The weight of ZnS required to produce 22.4 lits. of SO2 at s.t.p. [S = 32, Zn = 65, O = 16]
Ammonia reacts with sulphuric acid to give the fertilizer ammonium sulphate. Calculate the volume of ammonia [at s.t.p.] used to form 59 g of ammonium sulphate.
[N = 14, H = 1, S = 32, O = 16]2KClO3 ⟶ 2KCl + 3O2 ; C + O2 ⟶ CO2. Calculate the amount of KClO3 which on thermal decomposition gives 'X' vol. of O2, which is the volume required for combustion of 24 g. of carbon. [K = 39, Cl = 35.5, O = 16, C = 12].
Calculate the weight of ammonia gas.
(a) Required for reacting with sulphuric acid to give 78 g. of fertilizer ammonium sulphate.
(b) Obtained when 32.6 g. of ammonium chloride reacts with calcium hydroxide during the laboratory preparation of ammonia.
[2NH4Cl + Ca(OH)2 ⟶ CaCl2 + 2H2O + 2NH3]
[N = 14, H = 1, O = 16, S = 32, Cl = 35.5].