1.

What happens when?(a) Sulphur is boiled with caustic soda. (b) Sulphuric acid is treated with PCl_(5) (c) Sulphur dioxide gas, water vapour and air are passed over heated sodium chloride.

Answer»

Solution : (a) `4S +6NaOHtoNa_(2)S_(2)O_(3)+2Na_(2)S+3H_(2)Ooverset( Excesssattur)toNa_(2)S_(5)`
(b) `H_(2)SO_(4)+2PCI_(5)toSO_(2)Cl_(2)+2POCI_(3)+2HCI`
(c) `2SO_(2)+O_(2)+ 2H_(2)O2NaCI+H_(2)SO_(4)toNa_(2)SO_(4)+2HCI`


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