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

  

Answers


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


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