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Mass of H_2O in 1000 Kg of  CuSO_4\ .\ 5H_2O is :

  • Option 1)

    360.5 Kg

  • Option 2)

    36.05 Kg

  • Option 3)

    3605 Kg

  • Option 4)

    3.605 Kg

 

Answers (1)

best_answer

As learnt in

Molar Mass -

The mass of one mole of a substance in grams is called its molar mass.

- wherein

 Molar mass of water = 18 g mol-1

 

 

 Molar mass of CuSO_{4}.5H_{2}O=249.5 g mole ^{-1}

Molar mass of H_{2}O=18 g mole ^{-1}

Therefore, amount of water present in 249.5g \ of \ CuSO_{4}.5H_{2}O=18\times5=90 g

in \ 1g CuSO_{4}.5H_{2}O=\frac{90}{249.5}g = 0.3607g

Thus Mass of water in 1000kg of CuSO_{4}.5H_{2}O=(1000 \times 0.360 \times 1000) g= 360700g = 360.7kg

 


Option 1)

360.5 Kg

Correct option

Option 2)

36.05 Kg

Incorrect option

Option 3)

3605 Kg

Incorrect option

Option 4)

3.605 Kg

Incorrect option

Posted by

prateek

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