The set-up below was used to demonstrate the effect of heat on hard water

The set-up below was used to demonstrate the effect of heat on hard water

a) Name substance A.
b) Explain why the heating of hard water produced substance A.

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a) Carbon (IV) oxide gas

b) Temporary hard water contains calcium hydrogen carbonate (Ca(HCO₃)₂) or magnesium hydrogen carbonate (Mg(HCO₃)₂) which decomposes on heating to produce carbon (IV) oxide

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johnmulu answered the question on April 21, 2017 at 10:15

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