A reddish brown colored metal is used in electrical wires when powdered and heated strongly in an open china dish, its color turns black. when hydrogen gas is passed over this black substance, it regains its original color
sakshijpa05:
name the metal and black coloured substance.
write a balanced chemical equation for the both chemical reactions.
The element is copper and the substance is copper oxide
2Cu+O2. ->cuO
CuO +H2-> Cu + H2O
Answers
Answered by
10
A reddish Brown metal is Copper(Cu)
1⃣When Cu is passed through the open, it changes into CuO (black)
2Cu+O2=======> 2CuO
1⃣when hydrogen is passed through it, it regains Cu..
2CuO+H2======> 2Cu+H2O
hope it helps
1⃣When Cu is passed through the open, it changes into CuO (black)
2Cu+O2=======> 2CuO
1⃣when hydrogen is passed through it, it regains Cu..
2CuO+H2======> 2Cu+H2O
hope it helps
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Answered by
5
The reddish brown metal is copper.
When heated in air
2Cu + O2 ⇒ 2Cuo
We get copper oxide which is black in colour.
When hydrogen gas is passed over copper oxide,
Cuo + H2 ⇒ Cu + H20
Cuo gets reduced to copper while hydrogen gas gets oxidised to water.
thank youu so much... @nlyati2204
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