Hydrogen - Result Question 9

####12. Calgon used as a water softener is

[1989]

(a) Na2[Na4(PO3)6]

(b) Na4[Na2(PO3)6] (c) Na4[Na4(PO4)5]

(d) Na4[Na2(PO4)6]

Topic 3: Preparation and Properties of Hydrogen Peroxide

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Solution:

  1. (a) The complex salt of metaphosphoric acid sodium hexametaphosphate (NaPO3)6, is known as calgon. It is represented as Na2[Na4(PO3)6]
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