Chemistry
(a) Choosing only words from the following list, write down the appropriate words to fill in the blanks (i) to (v) below:
anions , anode, cathode, cations , electrode, electrolyte, nickel , voltameter.
The electroplating of an article with nickel requires an (i) …………… which must be a solution containing (ii) …………… ions. The article to be plated is placed as the (iii) …………… of the cell in which the plating is carried out. The (iv) …………… of the cell is made from pure nickel. The ions that are attracted to the negative electrode and discharged are called (v) ……………
(b) When a molten ionic compound is electrolysed, the metal is always formed at …………… and the non-metal is formed at ……………
(c) Electrolysis of acidulated water is an example of …………… (Reduction/ oxidation/ redox reaction/synthesis).
Electrolysis
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Answer
The electroplating of an article with nickel requires an (i) electrolyte which must be a solution containing (ii) nickle ions. The article to be plated is placed as the (iii) cathode of the cell in which the plating is carried out. The (iv) anode of the cell is made from pure nickel. The ions that are attracted to the negative electrode and discharged are called (v) cations
(b) When a molten ionic compound is electrolysed, the metal is always formed at cathode and the non-metal is formed at anode
(c) Electrolysis of acidulated water is an example of redox reaction
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