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Reaction of Acids with Metal Carbonate

On adding H...

Question

On adding $H C l$ to copper oxide the color of the product is__________.

A

pink

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B

black

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C

green

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D

white

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Solution

The correct option is C green
When copper oxide is treated with $H C l$ , the products formed $C u C l_{2}$ and water. The colour of the product formed is bluish green.

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Similar questions

Q. The black color of copper oxide turns _______ on treating with

H C l

.

Q. In adding dilute HCl to copper oxide powder, the solution formed is blue-green.

On the basis of reaction, what should be the nature of copper oxide?

Write down the changes that will be seen in each instance and explain the reason behind it.

(a) 50ml water is added to 50ml solution of copper sulphate.

(b) Two drops of the indicator phenlphthalein were added to 10ml solution of sodium hydroxide.

(c) Two or three filings of copper were added to 10ml dilute nitric acid and stirred.

(d) A litmus paper was dropped into 2ml dilute HCl. Then 2ml concentrated NaOH was added to it and stirred.

(e) Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH.

(f) Zinc oxide was added to dilute HCl and zinc oxide was added to dilute NaOH.

(g) Dilute HCl was added to limestone.

(h) Pieces of blue vitriol were heated in a test tube. On cooling, water was added to it.

(i) Dilute H 2 SO 4 was taken in an electrolytic cell and electric current was passed through it.

Q. Number of gaseous products that copper oxide forms on reaction with

H C l

In adding dilute HCl to copper oxide powder, the solution formed is blue-green. Write the balanced equation of the reaction taking place.

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Reaction of Acids with Metal Carbonate

Standard VII Chemistry

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