Question

What is the percentage of water in the hydrate copper sulfate pentahyride - (CuSO4*5H2O)

Answer all parts of this question:
Show your work ; Total mass of compound ; Mass of water in compound ; Percentage of water in compound

Answer 1

Atomic Masses of Cu=63.55 u
S =32 u
O =16 u
H =1 u
Molecular Mass of CuSO4*5H2O=[63.55+32+ 16*4+5*(1*2+16)]u =249.55 u
Molecular Mass of Water=(1*2)+(16*1)=18 u
Mass of Water in 1 Molecule of CuSO4*5H20=(5*18)u=90 u
Percentage of water=90/249.55*100%=36.06%

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