Question

Can anyone help!!!

Plz

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Answer 1

Hey..

We observe that foam is produced more in Set I than Set II ...and a white precipitate is too produced in Set II...

Reason for this is that on adding CaSO4 the water becomes hard and for a soap to be added in hard water forms precipitate..hence this is so


HOPE IT HELPS

Answer 2

The length of foam in set 1 would be more than than the length of foam in set 2
in set 1 there is only distilled water and liquid soap in it which will produce some length of foam
but in set 2 we have added CaSO4 which acts as a hardening agent which decreases the length of foam and less foam is produced than in set 1 because we added CaSO4
Hope it helps 
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