A reaction in which the same element is both oxidised and reduced is called
Correct answer: D. a disproportionation reaction
- A. a neutralisation reaction
- B. a displacement reaction
- C. a precipitation reaction
- D. a disproportionation reaction
Explanation
In disproportionation one species with an intermediate oxidation state changes into two products, one at a higher and one at a lower state, as when chlorine reacts with cold dilute alkali to give chloride and hypochlorite. The element must therefore have an accessible oxidation state on both sides of its starting value. This is why sodium, always plus 1 in compounds, cannot disproportionate.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Redox Reactions
Redox reactions involve oxidation and reduction occurring together, with electrons transferred between species or oxidation numbers changing. The topic covers assigning oxidation states, identifying oxidizing and reducing agents, balancing redox equations by oxidation number or half-reaction methods, and connecting chemical changes with galvanic and electrolytic cells.
Practise Electrochemistry
696 free Electrochemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Redox Reactions questions
In the reaction Zn + CuSO4 gives ZnSO4 + Cu, the substance oxidised is
In an electrochemical cell, oxidation always takes place at the
The function of the salt bridge in a galvanic cell is to
During the electrolysis of molten sodium chloride, sodium metal is produced at the cathode because sodium ions
Which of the following is NOT a redox reaction?