Question

When copper vessels are kept over a period of time, these get coated with green surface.

This is duo to

(i) oxidation of copper (ii)corrosion of copper

(iii) reduction of copper (iv)hydrolysis of copper



1) (i) and. (ii)
2) (ii) and (iii)
3) (i) and (iv)
4) (ii) and. (iv)


please help me. ​

Answer 1

Answer:

the answer is i and ii , option no one

Answer 2

When copper vessels are kept over a period of time, these get coated with green surface. This is due to 1) (i) and (ii).

What happens during corrosion?

• All copper vessels foster a green shaded layer on their surface when presented to soggy air for quite a while.
• In this synthetic cycle, copper erodes by oxidation, in which copper responds with oxygen in the air to frame copper oxide.
• Copper oxide then, at that point, consolidates with carbon dioxide to make copper carbonate, which gives it a green tone.
• This cycle is known as the erosion of copper.
• The green material is a combination of copper hydroxide$Cu(OH)_{2}$and copper carbonate $CuCO_{3}$

The response is:

$2Cu + H_{2} O + CO_{2} + O_{2} - > Cu(OH)_{2} + CuCO_{3}$

What is copper erosion called?

• Oxidized copper is a particular kind of erosion that is delivered during a three-step process where copper oxidizes to copper oxide, then, at that point, to cuprous or cupric sulfide, lastly to copper carbonate.
• It brings about a green-shaded copper layer or patina that structures after some time.

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