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Question: Answered & Verified by Expert
4 g of copper was dissolved in concentrated nitric aci(d) The copper nitrate solution on strong heating gave $5 g$ of its oxide. The equivalent weight of copper is
ChemistryRedox ReactionsCOMEDKCOMEDK 2016
Options:
  • A 12
  • B 20
  • C 23
  • D 32
Solution:
2134 Upvotes Verified Answer
The correct answer is: 32
Copper on reacting with conc. HNO ${ }_{3}$ gives copper nitrate.



On strongly heating with copper nitrate, copper oxide is obtained.


$\therefore$ Equivalent weight of $\mathrm{Cu}$
$=$ Weight of copper $\times$ Equivalent weight of oxygen $=4 \times 8=32$

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