An underground water sample is taken in two different beakers in equal amount. Certain amount of soap is dissolved in the first beaker and height of foam is noted. The water in second beaker is boiled,cooled,and then equal amount of soap is dissolved. The height of foam is noted. In which of the two cases height would be more and why? also give chemical equation involved.

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Solution

1. In beaker 1,lots of impurities along with calcium and magnesium salts are present,so foam formed on this will be less.
2. So height of foam in beaker 1 is less.

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1. In beaker 1,lots of impurities along with calcium and magnesium salts are present,so foam formed on this will be less. 2. So height of foam in beaker 1 is less.

1. In beaker 1,lots of impurities along with calcium and magnesium salts are present,so foam formed on this will be less.
2. So height of foam in beaker 1 is less.