Question

when hydrogen gas is paseed over heated copper oxide what do you observe and name the type of reaction and balance the equation
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Answer 1

Answer:

as hydrogen is more reactive then copper, it will replace copper from copper oxide to form water.the following reaction is displacement reaction.

Cu2O + H2 -----> 2 Cu + H2O

Answer 2

CuO + H2 → Cu + H2O

HYDROGEN DISPLACES COPPER FROM ITS COMPOUND.

THE REACTION IS ONE AND ONLY COMBINATION REACTION.