Question on: WAEC Chemistry - 1990

Which of the following equations represents the reaction leading to the removal of permanent hardness of water?

A
Ca(HCO 3)2 → CaCO3 + H2O + CO2
B
MgSO4 + Na 2CO3 + Na 2SO
C
Ca(OH) 2 + 2HCI → CaCI 2 + 2H 2O
D
Ca(HCO3)2 + Ca(OH)3 → 2CaCO3 + 2H2O
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Correct Option: B

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