Give chemical equations to manufacture of Sulphuric Acid by Contact process.

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Solution

Contact process for manufacturing of sulphuric acid involves following steps.
$i .$ Preparation of $S O_{2} S_{(s)} + O_{2 (g)} ⟶ S O_{2 (g)}$
$i i .$ Preparation of $S O_{.3} 2 S O_{2 (g)} + O_{2 (g)} ⟶ 2 S O_{3 (g)} Catalyst : N_{2} O_{5} T = 400 ° c - 450 ° c P = 1 - 2 a t m$
$i i i .$ Preparation of conc. $H_{2} S O_{4} H_{2} S O_{4} + S O_{3 (g)} ⟶ H_{2} S_{2} O_{7 (l)} H_{2} S_{2} O_{7 (l)} + H_{2} O_{(l)} ⟶ 2 H_{2} S O_{4} .$

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Give chemical equations to manufacture of Sulphuric Acid by Contact process.

Contact process for manufacturing of sulphuric acid involves following steps.i. Preparation of SO2S(s)+O2(g)⟶SO2(g)ii. Preparation of SO.32SO2(g)+O2(g)⟶2SO3(g)Catalyst :N2O5T=400°c−450°cP=1−2atmiii. Preparation of conc. H2SO4H2SO4+SO3(g)⟶H2S2O7(l)H2S2O7(l)+H2O(l)⟶2H2SO4.