Define the term electrolytic cell - NSC Physical Sciences - Question 9 - 2023 - Paper 2
Question 9
Define the term electrolytic cell.
A cell in which electrical energy is converted into chemical energy.
Which electrode (R or METAL SPRING) is the ANODE? Give a rea... show full transcript
Worked Solution & Example Answer:Define the term electrolytic cell - NSC Physical Sciences - Question 9 - 2023 - Paper 2
Step 1
Define the term electrolytic cell.
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Answer
An electrolytic cell is a system that converts electrical energy into chemical energy, facilitating chemical reactions through the application of an external electrical current.
Step 2
Which electrode (R or METAL SPRING) is the ANODE? Give a reason for the answer.
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Answer
Electrode R is the anode, as oxidation occurs there. In this process, R loses electrons, resulting in a decrease in its mass.
Step 3
Write down the:
3.1 Equation for the half-reaction occurring at the metal spring.
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Answer
The half-reaction occurring at the metal spring is:
ightarrow Zn (s)$$
Step 4
3.2 NAME or FORMULA of a suitable metal that can be used as electrode R.
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Answer
A suitable metal that can be used as electrode R is Zinc (Zn).
Step 5
Explain the answer to QUESTION 9.3.2.
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Answer
The answer is that Zn2+ ions are reduced because they gain electrons during the electrolysis process, leading to a decrease in the concentration of Zn2+ ions in the solution.
