MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Work Function

12. 1g mixtur...

Question

12. 1g mixture of cuprous oxide and cupric oxide was quantitatively reduced to 0.839g of metallic copper.What was the weight of cupric oxide in the original sample?(Cu=63.5,O=16)

Open in App

Solution

Suggest Corrections

thumbs-up

13

Similar questions

Q. 1.375 g of cupric oxide was reduced by heating in a current of hydrogen and the mass of copper that remained was 1.098 g . In another experiment 1.179 g copper was dissolved in nitric acid and the resulting copper nitrate was converted into cupric oxide . The mass of cupric oxide formed was 1.476 g . Show that these results illustrate the law of constant composition.

Q. 2.75 g of cupric oxide was reduced by heating in a current of hydrogen and the weight of copper that remained was 2.196 g. Another experiment, 2.358 g of copper was dissolved in nitric acid and the resulting copper nitrate converted into cupric oxide by ignition. The weight of cupric oxide formed was 2.952 g. Show that these results illustrate law of constant composition.
Hint : In first case % of oygen in

C u O = 20.14

% .In second case % of oxygen in

C u O = 20.14

%

1.375

g of cupric oxide was reduced by heating in a current of hydrogen and the weight of copper obtained was

1.098

g. In another experiment,

1.179

g of copper was dissolved in nitric acid and the resulting solution was evaporated to dryness. The residue of copper nitrate when strongly heated was converted into

1.4476

g of cupric oxide. The result of this process show :

1.375

g of cupric oxide was reduced by heating in a current of hydrogen and the weight of copper obtained was

1.098

g. In another experiment,

1.156

g of copper was dissolved in nitric acid and the resulting solution was evaporated to dryness. The residue of copper nitrate when strongly heated was converted into

1.4476

g of cupric oxide. State the law illustrated by these chemical combinations.

Q. 1.2375 g of cupric oxide on being heated in a current of hydrogen gave 0.9322 g of the metal In another experiment 0.9369 g of pure copper was dissolved in nitric acid Excess of acid evaporated and the residue has ignited The weight of the cupric oxide left was 1.2469 g. Which law of chemical combination is shown by the above results?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Work Function

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon