Class 12th Chemistry 2017 Set1 Delhi Board Paper Solution
Out of Cu+ and Cu2+, which ion is unstable in aqueous solution and why?
Cu+ is unstable in aqueous solution than Cu2+ because although 2nd I.E. of copper is large but hydration enthalpy for Cu2+ is much more negative than that for Cu+ and hence, it is more than compensates for the 2nd I.E. of copper. Therefore, many Cu+ compounds are unstable in aqueous solution and undergo disproportionation.
2Cu+ → Cu2+ + Cu
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(viii) Aniline to chlorobenzene
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(xiv) Isopropyl alcohol to iodoform
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(xviii) Benzene to diphenyl
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