a brown coloured metal "A"on heating in air becomes black in colour due to formation of "B".on passing an inflammable gas "C" into the surface of b"B"the reverse reaction takes place a is obtained.identify A,B,C.
a brown coloured metal "A"on heating in air becomes black in colour due to formation of "B".on passing an inflammable gas "C" into the surface of b"B"the reverse reaction takes place a is obtained.identify A,B,C.
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CuO + H2 -→ cu + H2O
A is copper Cu
B is Copper II oxide CuO
C is hydrogen gas
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