Question

QUESTION 2

A. Name the following: (

i) A liquid hygroscopic substance.

ii) An efflorescent decahydrate salt.

B. Differentiate between Deliquescent salt and hygroscopic salt.

C. Calculate the percentage loss of mass of hydrated copper [II]sulphate [CuSO4. 5H2O] when it is completely dehydrated.

(Atomic wts Cu=64, S=32, O=16, H=1)

D. Write the names of the following compounds:

i) Ca3(PO4)2 ii) NaAlO2

E. What is meant by the term ‘variable valency’. Give a reason why silver exhibit a valency of +1 and +2.


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Answer 1

Answer:

1

Explanation:

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Answer 2

Answer:

i

Explanation:

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