The molecular formula of a commercial resin used for exchanging ions in water softening is #"C"_8"H"_7("SO"_3)"Na"# molecular weight 206. The maximum uptake of #"Ca"^(2+)# ions by the resin when expressed in mole per gram resin is?
1 Answer
Sep 9, 2017
Balanced equation for water softening can be written as
#2"C"_8"H"_7("SO"_3)"Na"+"Ca"^(2+)->("C"_8"H"_7("SO"_3))_2"Ca"+2"Na"^(+)#
From the equation we see that
Given is molecular weight of resin
#~~0.0024# moles/g of resin