Practise MYP Chemistry questions on 5.12 Redox Reactions and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
Why is a substance that undergoes reduction specifically referred to as an 'oxidising agent'?
In a zinc–manganese dioxide dry cell battery, the redox processes at the electrodes can be represented by the following half-equations:
Which of the following statements correctly describes the redox nature of cellular respiration?
Based on the principle that the total number of electrons lost must equal the total number of electrons gained in a redox reaction, what is the molar ratio of to consumed in the overall cell reaction?
True or False: In any redox reaction, oxidation can occur independently without a corresponding reduction process taking place.
If an element in a chemical reaction undergoes a change where its oxidation state moves from to , which statement correctly describes the electron transfer involved?
Because it causes another species to lose electrons
Because its own oxidation state increases
Because it loses electrons to another species
Because it provides oxygen to the reaction
1 mole of to 1 mole of
1 mole of to 2 moles of
2 moles of to 1 mole of
1 mole of to 4 moles of
Glucose is reduced and oxygen is oxidized
Both glucose and oxygen are oxidized
Glucose is oxidized and oxygen is reduced
Neither species undergoes a change in oxidation state
