9.1 Skryf die tipe elektrochemiese sel neer wat hierbo geïllustreer word - NSC Physical Sciences - Question 9 - 2016 - Paper 2
Question 9
9.1 Skryf die tipe elektrochemiese sel neer wat hierbo geïllustreer word.
9.2 Definieer 'n reduseermiddel in terme van elektronoordrag.
9.3 Watter grafiek stel die... show full transcript
Worked Solution & Example Answer:9.1 Skryf die tipe elektrochemiese sel neer wat hierbo geïllustreer word - NSC Physical Sciences - Question 9 - 2016 - Paper 2
Step 1
Skryf die tipe elektrochemiese sel neer wat hierbo geïllustreer word.
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Answer
The type of electrochemical cell illustrated is an electrolytic cell.
Step 2
Definieer 'n reduseermiddel in terme van elektronoordrag.
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Answer
A reducing agent is a substance that donates electrons in a chemical reaction, thereby reducing another species. In terms of electron transfer, it is the species that gets oxidized while causing another to be reduced.
Step 3
Watter grafiek stel die verandering in massa van elektrode A voor?
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Answer
The graph showing the change in mass of electrode A typically reflects a decrease in mass as the electrode undergoes oxidation.
Step 4
Skryf die halfreaksie wat deur elektrode A plaasvind, neer.
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Answer
The half-reaction at electrode A can be represented as:
Cu(s)→Cu2+(aq)+2e−
Step 5
By watter elektrode (A of B) word chloorgas gevorm? Verduidelik hoe jy besluit het.
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Answer
Chlorine gas (Cl2) is formed at electrode B. This can be determined because chlorine gas is produced at the positive electrode (anode) during electrolysis, where oxidation takes place.
