Answer:
[tex]\% \:\mathrm{hydration}\:[/tex] in green vitriol [tex]= 45.32\%[/tex]
Explanation:
Atomic mass of Fe = 56 g/mol
Atomic mass of S = 32 g/mol
Atomic mass of O = 4 g/mol
Atomic mass of H = 1 g/mol
Molar Mass of [tex]FeSO_4.7H_2O = 56 + 32 + 4 \times 16 + 7(2\times1+16)= 278 g/mol[/tex]
Molar Mass of [tex]7H_2O = 7( 2\times1 + 16) =126 g/mol[/tex]
% hydration [tex]= (126/278) \times 100[/tex]
[tex]= 45.32\%[/tex]
