Post-UTME Chemistry 2015 Objective — Question 10
Question 10 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2015 Objective paper, with the correct answer and a full explanation.
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The addition of concentrated sodium chloride solution during the manufacture of soap is to
- A. hydrolyze the soap
- B. purify the soap
- C. precipitate the soapCorrect
- D. increase solubility of the soap
Explanation
Adding concentrated brine ('salting out') reduces the solubility of soap, causing it to precipitate out of solution for easy separation.
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