Q. Calgon used as water softner is
A) $Na_{2}\left\lbrack Na_{4}\left( PO_{3} \right)_{6} \right\rbrack$
B) $Na_{4}\left\lbrack Na_{2}\left( PO_{3} \right)_{6} \right\rbrack$
C) $Na_{2}\left\lbrack Na_{4}\left( PO_{4} \right)_{5} \right\rbrack\$
D) None of these
Explanation
(a)
Calgon is represented by sodium hexa metaphosphate, $\left( NaPO_{3} \right)_{6}\ or\ Na_{2}\left\lbrack Na_{4}\left( PO_{3} \right)_{6} \right\rbrack.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.