Chemistry
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].
Related Questions
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]
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].
Sodium carbonate reacts with dil. H2SO4 to give the respective salt, water and carbon dioxide. Calculate the mass of pure salt formed when 300 g. of Na2CO3 of 80% purity reacts with dil. H2SO4. [Na = 23, C = 12, O = 16, H = 1, S = 32].
Sulphur burns in oxygen to give sulphur dioxide. If 16 g. of sulphur burns in 'x' cc. of oxygen, calculate the amount of potassium nitrate which must be heated to produce 'x' cc. of oxygen. [S = 32, K = 39, N = 14, O = 16].