Chemistry, asked by aasthaamalik04, 9 months ago

CALCULATE THE PERCENTAGE LOSS OF MASS OF AQUEOUS COPPER SULPHATE, WHEN IT IS COMPLETELY DEHYDRATED BY CONC. SULPHURIC ACID

Answers

Answered by fathimaroohee
1

Answer:

Explanation:

What is the formula of Hydrated Copper sulphate?

It is CuSO₄.5H₂O

Now, molecular mass of 1 crystal of copper sulphate is:

64 + 32 + (4x16) + 5(2x1 + 16)

= 96 + 64 + 5x18

= 160 + 90

= 250.

Now, Find out the mass of copper sulphate when 5 molecules of water of crystallization is removed:

It is CuSO₄

= 64 + 32 + (4x16)

= 96 + 64

= 160.

What is the loss in mass?

It is (250 - 160) = 90g

Now, what is the percentage loss in mass?

Original mass was 250g. So, we will take it in our calculation.

Percentage loss =

90/250 * 100/1

= 0.3 * 100%

= 36%

Hence, percentage loss in mass is 36%

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