NARAYNA|Exercise STATEMENT TYPE QUESTOINS|20 Videos
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On heating a mixture of Cu_(2)O and Cu_(2)S , we get
On hanting a mixture of Cu_(2)O and Cu_(2)S , we get :
What happens when (a) ZnCO_(3) is heated in the absence of oxygen? (b) a mixture of Cu_(2)O" and "Cu_(2)S is heated?
When a equimolar mixture of Cu_(2) S and CuS is tirated with Ba(MnO_(4))_(2) in acidic medium, the final products cintain Cu^(2+) , So_(2) and Mn^(2+) . If the mol. Mass of Cu_(2) S, and Ba(MnO_(4))_(2) are M_(1) , M_(2) and M_(3) respectively then :
A mixture of Cu_2O and Cu_2S is heated. Write a balanced chemical equation.
Knowledge Check
On hanting a mixture of Cu_(2)O and Cu_(2)S , we get :
A
`CuCO_(2)`
B
`Cu+SO_(3)`
C
`CuO+CuS`
D
`Cu_(2)SO_(3)`
Copper metal can be prepared by roasting copper ore, which contain cuprite (Cu_(2)S) and copper sulfide. (CuS) Cu_(2)S (s) + O_(2) (g) rarr 2Cu (s) + SO_(2) (g) CuS (s) + O_(2) (g) rarr Cu (s) + SO_(2) (g) If ore contains 14.6% impurity in addition to a mixture of CuS and Cu_(2)S . Heating 100 gm of mixture produces 70 gm of Cu metal with 90% purity. [Cu = 63] Percentage (By mass ) of CuS in the sample is :
A
0.095
B
0.38
C
0.19
D
0.57
Copper metal can be prepared by roasting copper ore, which contain cuprite (Cu_(2)S) and copper sulfide. (CuS) Cu_(2)S (s) + O_(2) (g) rarr 2Cu (s) + SO_(2) (g) CuS (s) + O_(2) (g) rarr Cu (s) + SO_(2) (g) If ore contains 14.6% impurity in addition to a mixture of CuS and Cu_(2)S . Heating 100 gm of mixture produces 70 gm of Cu metal with 90% purity. [Cu = 63] Percentage (By mass) of sulphur in the sample is :
