NSC Technical Sciences Processes and redox reactions taking place in electrolytic cells: Write down the NAME of component

Write down the NAME of component X - NSC Technical Sciences - Question 5 - 2021 - Paper 2

Question 5

Write down the NAME of component X. Give a reason why component X is important in the cell above. Redraw the diagram above in your ANSWER BOOK and label both the a... show full transcript

Worked Solution & Example Answer:Write down the NAME of component X - NSC Technical Sciences - Question 5 - 2021 - Paper 2

Step 1

Write down the NAME of component X.

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Answer

Cell/Battery/Power Source

Step 2

Give a reason why component X is important in the cell above.

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Answer

It is a source of electrical energy to run a non-spontaneous reaction.

Step 3

Redraw the diagram above in your ANSWER BOOK and label both the anode and cathode, as well as component X. Indicate component X with the CORRECT symbol.

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Answer

In the drawing, the anode is connected to the positive terminal of the battery, while the cathode is connected to the negative terminal. Ensure component X is labeled as the cell/battery.

Step 4

Write down the chemical formula of the electrolyte.

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Answer

CuCl₂

Step 5

Compare the anode and the cathode with regard to the following:

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Step 6

5.1 Type of half-reaction

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Cathode: reduction half-reaction; Anode: oxidation half-reaction.

Step 7

5.2 Polarity of the electrode

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Cathode is the negative electrode; Anode is the positive electrode.

Step 8

Write down the half-reaction that takes place at the negative electrode.

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Answer

Cu²⁺(aq) + 2e⁻ → Cu(s)

Step 9

Write down the net cell reaction for the cell above.

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Answer

2Cu²⁺(aq) + C → 2Cu(s) + Cl₂(g)

Write down the NAME of component X - NSC Technical Sciences - Question 5 - 2021 - Paper 2

Worked Solution & Example Answer:Write down the NAME of component X - NSC Technical Sciences - Question 5 - 2021 - Paper 2

Write down the NAME of component X.

Give a reason why component X is important in the cell above.

Redraw the diagram above in your ANSWER BOOK and label both the anode and cathode, as well as component X. Indicate component X with the CORRECT symbol.

Write down the chemical formula of the electrolyte.

Compare the anode and the cathode with regard to the following:

5.1 Type of half-reaction

5.2 Polarity of the electrode

Write down the half-reaction that takes place at the negative electrode.

Write down the net cell reaction for the cell above.

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