We use polymetaphosphates as water softeners | vedclass

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Question

(C) Polymetaphosphates,such as sodium hexametaphosphate $(Na_6P_6O_{18})$,are commonly used as water softeners. They function by sequestering the meta

Vedclass · Accepted Answer

Form soluble complexes with the cations of hard water

Vedclass · Answer

(C) Polymetaphosphates,such as sodium hexametaphosphate $(Na_6P_6O_{18})$,are commonly used as water softeners. They function by sequestering the metal cations responsible for water hardness,such as $Ca^{2+}$ and $Mg^{2+}$. These polyphosphates form stable,soluble complexes with these cations,thereby preventing them from reacting with soap to form scum. Therefore,the correct mechanism is the formation of soluble complexes with the cations of hard water.

We use polymetaphosphates as water softeners as they:

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