What is the percentage of water in $CoCl_2 * 6H_2O$ ?

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Answer 1 · 2016-06-05T04:51:05

$"%Water = " "Mass of water"/"Molar mass of cobaltous chloride hexahydrate"xx100%$

So, $(6xx18.01*g*mol^-1)/(237.93*g*mol^-1)xx100%~=50%$

The hexahydrate has a beautiful purple colour. The anhydrous salt, $CoCl_2$ , has an equally beautiful blue colour.

What is the percentage of water in CoCl_2 * 6H_2OCoCl_2 * 6H_2O?