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    Chemistry
    Grade-7
    Easy

    Question

    Scouts spend the night camping beside the water. They are required to wash everything in seawater.
    What kind of material would be best for successfully washing their clothes?

    1. Soaps
    2. Bleach
    3. Detergent
    4. Antiseptic

    Hint:

    The substance containing potassium salts works well.

    The correct answer is: Soaps

      Soaps would be best for successfully washing their clothes.
      Brine soap is a potassium salt, not a sodium salt. Sodium and potassium are both alkali metals. Relatively high concentrations of salt (sodium chloride) in seawater reduce the solubility of soaps made with sodium hydroxide due to the salting-out effect. Potassium soap is more soluble in seawater than sodium soap, so it is more effective in seawater.

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