Water is said to be temporarily hard when it contains

Assessment: JAMB UTME - Chemistry - 2014 Subject: Chemistry

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Water is said to be temporarily hard when it contains
Answer Details
Water is said to be temporarily hard when it contains Ca (HCO3)2 and Mg (HCO3)2 salts. Temporary hardness is caused by the presence of dissolved bicarbonate minerals in water, which can be removed by boiling. When the water is heated, the bicarbonate minerals decompose and release carbon dioxide gas, water, and solid calcium or magnesium carbonate. This solid material can be filtered out, leaving the water "soft."
Read lesson note on Solubility Of Substances (Ghana Only) (WAEC)
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