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Calgon used as a water softener is...

Calgon used as a water softener is

A

`Na_2[Na_4(PO_3)_6]`

B

`Na_4[Na_2(PO_3)_6]`

C

`Na_2[Na_4(PO_4)_5]`

D

`Na_4[Na_4(PO_4)_6]`

Text Solution

Verified by Experts

The correct Answer is:
A
Calgon is sodium hexametaphosphate `Na_2[Na_4(PO_3)_6)]`. It is used as water softener.
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