Exams › JEE Main › Chemistry

State whether the following is true or false: In aqueous solution, Cu+ undergoes disproportionation to give Cu2+ and metallic copper.

1. True
2. False
3. Only at high temperature
4. Only in non-aqueous medium

Correct answer: True

Solution

Cu+ is unstable in water because the large hydration energy of Cu2+ more than compensates the second ionisation energy, making 2Cu+ -> Cu2+ + Cu spontaneous.

Related JEE Main Chemistry questions

• A transition metal M gives a volatile chloride whose vapour density is 94.8. If this chloride contains 74.75% chlorine by mass, what is the formula of the metal chloride?
• What is the ratio of the magnetic moments of Fe(III) and Co(II)?
• Which of the following species contains the greatest number of unpaired electrons?
• Which of the following species contains an atom in the +6 oxidation state?
• Which of the following pairs contains compounds in which the metal in each case is present in its maximum possible oxidation state?
• Among the following metal oxides, which one exhibits antiferromagnetic behavior?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →