Hydrogen - Result Question 9
####12. Calgon used as a water softener is
[1989]
(a) $Na_2[Na_4(PO_3)_6]$
(b) $Na_4[Na_2(PO_3)_6]$ (c) $Na_4[Na_4(PO_4)_5]$
(d) $Na_4[Na_2(PO_4)_6]$
Topic 3: Preparation and Properties of Hydrogen Peroxide
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Solution:
- (a) The complex salt of metaphosphoric acid sodium hexametaphosphate $(NaPO_3)_6$, is known as calgon. It is represented as $Na_2[Na_4(PO_3)_6]$
