(a) Give two reasons why carbon(IV) oxide is used for extinguishing fire
(b) Explain briefly the water softening action of cation exchane resins.
(b) Explain briefly the water softening action of cation exchane resins.
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Correct Answer: Option n
Explanation:
(a) The non-flamable nature and the high density of carbon (IV) oxkfe makes it suitable for extinguishing fires.
(b) The cation exchange resin is a complex substance which has its cation part capable of being replaced by the calcium ion (Ca\(^{2+}\)) from the hard water run over the resin. The water running out of the resin column is the softened water
(a) The non-flamable nature and the high density of carbon (IV) oxkfe makes it suitable for extinguishing fires.
(b) The cation exchange resin is a complex substance which has its cation part capable of being replaced by the calcium ion (Ca\(^{2+}\)) from the hard water run over the resin. The water running out of the resin column is the softened water