Home
Class 12
CHEMISTRY
When Zinc dust is added to sufficiently ...

When Zinc dust is added to sufficiently large volume of aqueous solution of copper sulphate, 3.175 g of copper metal and 20 J of heat are produced. The `DeltaH` for the reaction
`Zn(s)+CuSO_(4)(aq)toZnSO_(4)(aq)+Cu(s)` is (Atomic weight of Zn and Cu are 65.3 and 63.5 respectively)

A

20 J

B

400 J

C

63.5 J

D

65.3 J

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

For the following cell Zn(s)|ZnSO_4 (aq) ||CuSO_4 (aq)|Cu(s) When [Zn^(2+)] is ten times of [Cu^(2+)] the expression Delta G ( in J mol^-1 ) is

How much copper can be obtained from 100 g of CuSO_4 (Atomic mass of Cu = 63.5, S = 32)

On the basis of position of Zn and Cu in reactivity series, when When Zn rod is dipped in CuSO_4 solutions, Cu had been displaced. Isn't it due to the higher reactivity of zinc (Zn) when compared to copper (Cu)?

A current of strength 2.5 amp was passed through CuSO4 solution for 6 minutes 26 seconds.The amount of copper deposited is (at. wt. of C u=63.5) cdot(F=96500 C) (a)0.3175g (b)3.175g (c)0.635g (d)6.35g

Three electrolytic cells A, B, C containing solutions of ZnSO_4, AgNO_3 and CuSO_4 , respectively are connected in series. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?

Copper is most noble of the first row transition metals and occurs in small deposits in several countries.Ores of copper include chalcanthite (CuSO_4,5H_2O) atacamite (Cu_2Cl(OH)_3) , cuprite (Cu_2O) , copper glance (Cu_2S) and malachite (Cu_2(OH)_3CO_3) . However, 80% of the world copper production comes from chalcopyrite (CuFeS_2) . The extraction fo copper from chalcopyrite involves partial roasting, removal of iron and self reduction. In self reduction , the reducing agent is

Copper is most noble of the first row transition metals and occurs in small deposits in several countries.Ores of copper include chalcanthite (CuSO_4,5H_2O) atacamite (Cu_2Cl(OH)_3) , cuprite (Cu_2O) , copper glance (Cu_2S) and malachite (Cu_2(OH)_3CO_3) . However, 80% of the world copper production comes from chalcopyrite (CuFeS_2) . The extraction fo copper from chalcopyrite involves partial roasting, removal of iron and self reduction. Partial roasting of chalcopyrite produces

Copper is most noble of the first row transition metals and occurs in small deposits in several countries.Ores of copper include chalcanthite (CuSO_4,5H_2O) atacamite (Cu_2Cl(OH)_3) , cuprite (Cu_2O) , copper glance (Cu_2S) and malachite (Cu_2(OH)_3CO_3) . However, 80% of the world copper production comes from chalcopyrite (CuFeS_2) . The extraction fo copper from chalcopyrite involves partial roasting, removal of iron and self reduction. Iron is removed from chalcopyrite as