Some water samples A, B and C were tested with soap solution. The lathering produced was recorded as good or poor. The results are in...

      

Some water samples A, B and C were tested with soap solution. The lathering produced was recorded as good or poor. The results are in the table below.

a) Identify the anions present in sample of water A.
b) Give an advantage of hard water.
c) State one structural difference between a soapy and soapless detergent.

  

Answers

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a) SO^2-₄
Cl^–
b) Brewery
Accept any other correct advantage
c) Soapy detergent has carboxylate end (-COO-) while soapless has sulphonate end

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Kavungya answered the question on May 24, 2019 at 09:24

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