Question

Upon heating with $Cu_2S.$ the reagent(s) that give copper metal is/are

• A. $CuFeS_2$
• B. $CuO$
• C. $Cu_2O$
• D. $CuSO_4$

Answer 1

The Correct Option is D

(A) $2 CuFeS _{2}+ O _{2} {->[{\Delta}]}Cu _{2} S +2 FeS + SO _{2}$
(B) $4 CuO {->[{1100^{\circ} C }]} 2 Cu _{2} O + O _{2}$
$2 Cu _{2} O + Cu _{2} S {->[{\Delta}]} 6 Cu + SO _{2}$
(C) $Cu _{2} S +2 Cu _{2} O {->[{\Delta}]} 6 Cu + SO _{2}$
(D) $CuSO _{4} {->[{720^{\circ} C }]} CuO + SO _{2}+\frac{1}{2} O _{2}$
$4 CuO {->[{1100^{\circ} C }]} 2 Cu _{2} O + O _{2}$
$2 Cu _{2} O + Cu _{2} S {->[{\triangle}]} 6 Cu + SO _{2}$