First slide

General methods of extraction of elements from the earth crust

Question

Which of the following statements about the advantage of roasting of sulphide ore before reduction is not true?

Moderate

A

$∆_{f} G^{⊝}$ of the sulphide is greater than CS₂, and H₂S
B

$∆_{f} G^{⊝}$ is negative for roasting of sulphide ore to oxide
C

Roasting of the sulphide to oxide is thermodynamically feasible
D

Carbon and hydrogen are suitable reducing agents for metal sulphides

Solution

$∆_{f} G^{⊝}$ for sulphides > $∆_{f} G^{⊝}$ for CS₂, and H₂S and thus C and H₂, cannot reduce metal sulphide.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App