4 g of copper was dissolved in concentra...

4 g of copper was dissolved in concentrated nitric acid. The copper nitrate solution on strong heating gave 5 g of its oxide. The equivalent weight of copper is

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The correct Answer is:

Weight of copper oxide = 5 g
weight of copper takes `= 4 g`
`.:` weight of oxygen in copper oxide `=5-4=1 g`
weight of copper reacted with 1 g `O_(2) =4 g` `:.` weight of copper, which would react with `8 g O_(2)" is "=(4xx8)/(1)=32 g`

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