A brown element x on heating in air forms a compound y. When hydrogen gas is passed over y , it changes to x again
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x is copper
y iscopper oxide
CU +O2 =2cuo (actually there can't be equal sign here,,but in computer there is not any symbol like that so sorry)
again
cuo +h2=cu+h20
in first equation it is a combination reaction where as it is redox reaction in equation 2
so cheers
y iscopper oxide
CU +O2 =2cuo (actually there can't be equal sign here,,but in computer there is not any symbol like that so sorry)
again
cuo +h2=cu+h20
in first equation it is a combination reaction where as it is redox reaction in equation 2
so cheers
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read it carefully and briefly you will get your answer soon...............
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