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a)Using ionic equation explain how sodium carbonate can be used to soften hard water.(b)Other than softening of hard water give 2 other uses of sodium...

      

a)Using ionic equation explain how sodium carbonate can be used to soften hard water.
b)Other than softening of hard water give 2 other uses of sodium carbonate.

  

Answers


Davis
a)Mg2+ (aq) + CO2-3(aq)------------> MgCO3(s)

Ca2+ (aq) + CO2-3(aq) ---------------> CaCO3(s)

Carbonate ions react with either Ca2+ and Mg2+ in hard water to form insoluble calcium carbonate and magnesium carbonate which is precipitated out.

b)-Manufacture of glass
-Manufacture of detergents
-Manufacture of bleaches used in paper industry

Githiari answered the question on September 14, 2017 at 19:24


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