Chemistry, asked by CSKING5967, 1 year ago

A brown substance x on heating in air forms substance why when hydrogen gas is passed over heated why it again changes back into x

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Answered by marasarora

A brown substance X on heating in air forms substance Y. when hydrogen gas is passed over heated it again changes back into X because it reduces
(2Cu + O2 _____ 2CuO) first reaction
(CuO +H2 _____ Cu + H20) second reaction

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