Problem

Zeolite A is used as a water softener in detergents and washing powders. Industrial produc...

Zeolite A is used as a water softener in detergents and washing powders. Industrial production combines hydrated A12O3, aqueous NaOH and Na4Si04. After crystallization, the product (zeolite A) is subject to a number of washing and drying processes before use.

(a) Describe the general structural characteristics of a zeolite, and comment on how an aluminosilicate differs from a silicate,


(b) By representing zeolite A as NavA, suggest how it functions as a water softener.

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Solutions For Problems in Chapter 14