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

Chemistry
WAEC 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
  • E. MgSO4 + BaCI2 → MgCI2 + BaSO4
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Correct Answer: Option B
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