Selina Concise Chemistry Class 10 ICSE Solutions Sulphuric Acid Selina Concise Chemistry Class 10 ICSE Solutions Sulphuric Acid Exercise 1 Solution 1. (a) Sulphuric acid is called King of Chemicals because there is no other manufactured compound which is used by such a large number of key industries. (b) Sulphuric acid is referred to as Oil of vitriol as it was obtained as an oily viscous liquid by heating crystals of green vitriol. Solution 2. (a) Two balanced equations to obtain SO2 is: (i) 4FeS2 + 11O2 → 2Fe2O3 +8SO2 (ii) S +O2 → SO2 (b) The conditions for the oxidation of SO2 are: (i) The temperature should be as low as possible. The yield has been found to be maximum at about 4100C-450oC (ii) High pressure (2 atm) is favoured because the product formed has less volume than reactant. (iii) Excess of oxygen increases the production of sulphur trioxide. (iv) Vanadium pentoxide or platinised asbestos is used as catalyst. (c) Sulphuric acid is not obtai...
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