Question

5. Select the appropriate options and complete the following
paragraph
(chlorides, hydroxides, white, brown, sodium carbonate, sodium
bicarbonate, carboxylic acids, soft water, hard water)
Soaps are sodium or potassium salts of (fatty acids).
Water that produces lather with soap readily is called
while water that does not produce lather with soap really is
called
The hardness of water is due to to the
presence of
and sulphates of calcium and magnesium.
When soap is added to hard water, calcium and magnesium
ions present in hard water react with soap to form
precipitates of calcium and magnesium salts of fatty acids.
can be used to soften hard water. When it is added to
hard water, insoluble carbonate salts of calcium and
magnesium are formed, which can be filtered off. Thus, hard
water becomes soft and suitable for use.
6. Complete the following:​

Answer 1

Answer:

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