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Silver is monovalent and has atomic mass...

Silver is monovalent and has atomic mass of 108. Copper is divalent and has an atomic mass of 63.6. The same electric current is passed for the same length of time through a silver couloment and a copper coulometer. If 27.0 g of silver is deposited, then the corresponding amount of copper deposited is

A

63.60 g

B

31.80 g

C

15.90 g

D

7.95 g

Text Solution

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The correct Answer is:
D
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Same quantity of electrical charge that deposited 0.583g of silver was passed through a solution of gold salt. If 0.335g of gold is deposited, calculate the oxidation state of gold in the given salt. At. wt. of Au = 197 .

Same quantity of electrical charge that deposited 0.583 g of silver was passed through a solution of gold salt. If 0.335 g of gold is deposited, calculate the oxidation state of gold in the given salt. At wt of Au = 197.

Knowledge Check

  • Copper can be deposited from acidified copper sulphate and alkaline cuprous cyanide. If the same current is passed for a definite time:

    A
    The amount of copper deposited from acidic copper sulphate will be higher
    B
    The amount of copper deposited from alkaline cuprous cyanide will be higher
    C
    The same amount of copper will be deposited
    D
    None of the above

  • Weight of copper (atomic mass 63.5) deposited when 2 Faradays of electricity is passed through

    A
    63.5g
    B
    31.15g
    C
    127g.
    D
    2g.

  • Same amount of electric current is passed through solutions of AgNO_3 and HCl. If 1.08 g of silver is obtained in the first case, the volume of hydrogen liberated at S.T.P. in the second case is

    A
    `112 cm^3`
    B
    `22400 cm^3`
    C
    `224 cm^3`
    D
    1.008g

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