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Extraction of Copper

The article t...

Question

The article to be electroplated is always placed at__.

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Solution

During the electrolytic reaction, the metal is always deposited at the cathode by the gain of electrons.

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Q. Which of the following options are correct about electroplating?

i. The article to be electroplated is always placed at the anode.

ii. The electrolyte must contain ions of the metal which is to be plated on the article.

iii. A higher current for a shorter time should be used.

iv. A direct current should be used instead of an alternating current.

[1 mark]

Q. During electroplating by electrolysis, the article to be electroplated is:

Q. A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide.
(a) What kind of salt is sodium argentocyanide?
(b) Why is it preferred to silver nitrate as an electrolyte?
(c) State one condition to ensure that the deposit is smooth, firm and long lasting.
(d) Write the reaction taking place at the cathode.
(e) Write the reaction taking place at the anode.

How many words can be formed from the letters of the words ARTICLE, if vowels always come at the odd places:

Q. (i) Name the product formed at the anode during the electrolysis of acidified water using platinum electrodes.
(ii) Name the metallic ions that should be present in the electrolyte when an article made of copper is to be electroplated with silver.

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