Scelta multipla
In the reaction 3 Na(s) + AlCl_3(aq) → 3 NaCl(aq) + Al(s), which substance is reduced?
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6. Chemical Quantities & Aqueous Reactions
Redox Reactions
Scelta multipla
When a compound is oxidized, it ______ one or more electrons.
A
transfers
B
shares
C
loses
D
gains
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Understand the concept of oxidation in chemistry: Oxidation is defined as the loss of electrons by a molecule, atom, or ion.
Recall that when a compound is oxidized, it undergoes an increase in its oxidation state due to losing electrons.
Recognize that the options 'transfers' and 'shares' do not specifically describe the electron change in oxidation; 'gains' is the opposite of what happens in oxidation.
Therefore, the correct description is that the compound 'loses' one or more electrons during oxidation.
Summarize: Oxidation = loss of electrons, which increases the oxidation number of the species involved.
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