Reaction of calgon with hard water containing | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Calgon is the trade name for sodium hexametaphosphate,$\left(NaPO_3\right)_6$. It ionizes in water to provide a complex anion: $Na_2\left(Na_4P_6O

Vedclass · Accepted Answer

$\left[Na_2CaP_6O_{18}\right]^{2-}$

Vedclass · Answer

(A) Calgon is the trade name for sodium hexametaphosphate,$\left(NaPO_3\right)_6$. It ionizes in water to provide a complex anion: $Na_2\left(Na_4P_6O_{18}\right) \longrightarrow 2Na^{+} + \left[Na_4P_6O_{18}\right]^{2-}$ When added to hard water,the $Ca^{2+}$ ions displace the $Na^{+}$ ions from the complex anion to form a soluble complex: $Ca^{2+} + \left[Na_4P_6O_{18}\right]^{2-} \longrightarrow \left[CaNa_2P_6O_{18}\right]^{2-} + 2Na^{+}$

Reaction of calgon with hard water containing $Ca^{2+}$ ions produces:

Similar Questions

The solubility of an ionic compound is compared in heavy water $(D_2O)$ and simple water $(H_2O)$. It is:

Can you use soaps and synthetic detergents to check the hardness of water?

Systematic name of $H_2O$ (oxide of hydrogen) is

When a molten ionic hydride is electrolysed:

What is the chemical nature of alane?

Vedclass Test Series

Exam Paper Generator

Online Exam Module