1.

A salt containing water of crystallization gave the following percentage composition : Mg = 9.76 , S = 13.01 , O = 26.01 and H_(2)O = 51.22 Calculate the simplest formula. (At. Mass of Mg = 24)

Answer»


SOLUTION :`{:("Constituent",%"age","Atomic MASS/Mol. mass","Moles of CONST."=(%)/("Mol. mass"),"Simplest Ratio"),(Mg,9.76,24,9.76//24-0.407,1),(S,13.01,32,13.01//32=0.407,1),(O,26.01,16,26.01//16=1.626,4),(H_(2)O,51.22,18,51.22//18=2.846,7):}`
`THEREFORE"Empirical Formula "=MgSO_(4).7H_(2)O`


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