Define (i) oxidation, (ii) reduction, in terms of electron transfer - Leaving Cert Chemistry - Question 9 - 2018
Question 9
Define (i) oxidation, (ii) reduction, in terms of electron transfer.
Potassium metal reacts violently with chlorine gas to form a white salt, potassium chloride, ac... show full transcript
Worked Solution & Example Answer:Define (i) oxidation, (ii) reduction, in terms of electron transfer - Leaving Cert Chemistry - Question 9 - 2018
Step 1
Define (i) oxidation
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Answer
Oxidation is defined as the loss of electrons during a chemical reaction. This process often results in an increase in the oxidation state of the substance that is oxidized.
Step 2
Define (ii) reduction
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Answer
Reduction refers to the gain of electrons during a chemical reaction. This process frequently leads to a decrease in the oxidation state of the substance that is reduced.
Step 3
(i) Which element is oxidised?
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Answer
In the reaction, potassium (K) is the element that is oxidised. It loses electrons to form potassium ions.
Step 4
(ii) Which substance is the oxidising reagent?
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Answer
The oxidising reagent in this reaction is chlorine (Cl₂). It gains electrons from the potassium, facilitating its oxidation.
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