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

Plumbosolvency is a health hazard in the transportation of

Hydrogen and oxygen are both gases. What compound is formed by their combination?

Which pairs of ions are responsible for hardness of water?

When $SO_3$ is treated with heavy water,the product is:

The decreasing order of hydrogen bonding in the following forms of water is correctly represented by:
$A.$ Liquid water
$B.$ Ice
$C.$ Impure water

Vedclass Test Series

Exam Paper Generator

Online Exam Module