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Cyanide or Macarthur Forrest Process

Zinc, not cop...

Question

Zinc, not copper, is used for the recovery of metallic silver from the complex ${[A g {(C N)}_{2}]}^{-}$ , explain.

A

Zinc is more reducing and cheaper than copper.

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B

Zinc is less reducing and cheaper than copper.

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C

Zinc is more reducing and higher than copper.

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D

None of these

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Solution

The correct option is A Zinc is more reducing and cheaper than copper.
Zinc has more reduction potential than copper. Hence Zinc, not copper, is used for the recovery of metallic silver from the complex ${[A g {(C N)}_{2}]}^{-}$

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Similar questions

Q. Assertion :Zinc but not copper is used for the recovery of silver from the complex

[A g (C N)_{2}]

. Reason: Zinc is cheaper as well as a strong reducing agent than Cu and replaces Ag from the complex.

Read the above assertion and reason and choose the correct option regarding it.

Q. Zinc is used for the recovery of Ag from the complex

[A g (C N)_{2}] -

while copper is not used because Zn is powerful reducing agent than Cu.
If true enter 1,else enter 0.

Q. Question 4
Food cans are coated with tin and not with zinc because:
a) Zinc is costlier than tin
b) Zinc has a higher melting point than tin
c) Zinc is more reactive than tin
d) Zinc is less reactive than tin

Assertion: Zinc is coated on the iron to prevent corrosion in a process called galvanization.

Reason: Zinc is a stronger reducing agent than iron and is more easily oxidized than iron.

Q. Try these on Kittu's home:
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(b) 53 − 20 = _________
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(d) 11 less than 66 is _________.
(e) 62 + 13 = ________
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(g) 10 and 40 more is ________.
(h) 9 added to 28 gives ________.
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(k) 4 and 37 more is ________.
(l) Take 35 away from 83. We get _______.

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