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  Inorganic Chemistry

STANNOUS OXIDE, SNO :

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It is prepared by heating stannous oxalate SnC2O4 ——> SnO + CO + CO2

Oxidation of SnO to SnO2 is checked by CO . It is a grey solid which oxidizes readily to SnO2 when heated in air.

2SnO + O2 ——> 2SnO2

It is amphoteric in nature and reacts both with acids and alkalies. With NaOH it forms Na2SnO2

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