Which colour change is observed when dilute $HCl$ is added to a beaker containing copper oxide?

Open in App

Solution

A blue-green colour is observed when dilute $HCl$ reacts with copper oxide due to the formation of copper chloride.
Copper oxide is a base which reacts with dilute acids to give salt and water. The reaction can be shown as follows:

$C u O (s) + 2 H C l (a q) \to C u C l_{2} (a q) + H_{2} O (l)$

Suggest Corrections

Similar questions

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.

(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.

Which colour change is observed when dilute $HCl$ is added to a beaker containing copper oxide?

Blue litmus solution is added to two test tubes A and B containing dilute $HCl$ and $NaOH$ solution respectively. In which test tube a colour change will be observed? State the colour change and give its reason.

Q. When copper oxide is reacted with dilute HCl what is the colour change ?give reason and relevant chemical equation for this change.

What would be the color of the solution when dilute HCl is added to copper(II) oxide?

Join BYJU'S Learning Program

Which colour change is observed when dilute HCl is added to a beaker containing copper oxide?

A blue-green colour is observed when dilute HCl reacts with copper oxide due to the formation of copper chloride. Copper oxide is a base which reacts with dilute acids to give salt and water. The reaction can be shown as follows: CuO(s)+2HCl(aq)→CuCl2(aq)+H2O(l)

Which colour change is observed when dilute $HCl$ is added to a beaker containing copper oxide?

A blue-green colour is observed when dilute $HCl$ reacts with copper oxide due to the formation of copper chloride.
Copper oxide is a base which reacts with dilute acids to give salt and water. The reaction can be shown as follows:

$C u O (s) + 2 H C l (a q) \to C u C l_{2} (a q) + H_{2} O (l)$