A student fetched water from a river in a limestone area. He used it for washing and realized that it did not lather easily. (i) Name the...

      

A student fetched water from a river in a limestone area. He used it for washing and
realized that it did not lather easily.
(i) Name the two ions that prevent lathering
ii)Given that the structure of soap is C₁₇H₃₅COONa.Explain by means of ionic equations how the above ions prevent lathering

  

Answers

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i)Mg²⁺// magnesium ions
Ca²⁺ // calcium ions

ii)Ca²⁺ (aq) + C₁₇H₃₅COO-(aq)--------> C₁₇H₃₅COOCa(s)
Mg²⁺(aq) + C₁₇H₃₅COO-(aq)---------------> C₁₇H₃₅COOMg (aq)

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Githiari answered the question on September 18, 2017 at 07:39

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