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Zinc sulphate contains 22.65% of zinc an...

Zinc sulphate contains `22.65%` of zinc and `43.9%` of water of crystallization. If the law of constant proportions is true, then the the weight of zinc required to produce `20 g` of the crystals will be

A

(a)`45.3 g`

B

(b)`4.53 g`

C

(c )`0.453 g`

D

(d)`453 g`

Text Solution

Verified by Experts

The correct Answer is:
B
`100 g` of `ZnSO_(4)` crystals are obtained from`=22.65 g Zn`
`1 g` of `ZnSO_(4)` crystals will be obtained from`=22.65/100 g Zn`
`20 g` of `ZnSO_(4)` crystals obtained from`=22.65/100xx20=4.53 g`
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