Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8
Banner 9

Q.

A sulphide ore like ZnS is first roasted into its oxide prior to reduction by carbon because:

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya

a

a sulphide ore cannot be reduced to metal at all

b

no reducing agent is found suitable for reducing a sulphide ore.

c

the Gibb's free energy of formation of most sulphides are greater than that for CS2.

d

a metal oxide is generally less stable than the metal sulphide.

answer is C.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

The Gibb's free energy of most sulphides are greater than that for CS2. In fact, CS2 is an endothermic compound. Therefore, the ΔfG∘of MxS is not compensated. So reduction of MxS is difficult. Hence it is common practice to roast sulphide ores to corresponding oxides prior to reduction.
Watch 3-min video & get full concept clarity

courses

No courses found

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon