Na₆P₆O₁₈ is Sodium Hexametaphosphate, also known commercially as Calgon. It is a complex phosphate widely used as a water softening agent because it forms soluble complexes with calcium and magnesium ions, preventing them from precipitating and causing hardness.
Which one of the following is used for water softening ?
Asked in UPSC CAPF 2019 · Topic: Inorganic Chemistry (Chemistry of Main Group Elements (s-block and p-block))
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