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Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistrySome Basic Concepts of Chemistry5 Marks
Question
How much copper can be obtained from 100g of copper sulphate (CuSO4)?
✓

Answer

1 mole of CuSO4 contains 1 mole of Cu.
Molar mass of CuSO4
= (63.5) + (32.00) + 4(16.00)
= 63.5 + 32.00 + 64.00
= 159.5 gram
159.5 gram of CuSO4 contains 63.5 gram of Cu.
Therefore, 100g of CuSO4 will comtain $\frac{63.5\times100\text{g}}{159.5}$ of Cu.
$=\frac{63.5\times100\text{g}}{159.5}$
$=39.81\text{g}$

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