From the chemical formula for bluestone, determine the theoretical percent composition of water in bluestone
The chemical formula for bluestone is CuSO4·5H2O. To determine the theoretical percent composition of water in bluestone, we need to consider the molar mass of water (H2O) and the molar mass of bluestone (CuSO4·5H2O).
Molar mass of water (H2O):
1 mol of H2O = 2(1.008 g/mol) + 15.999 g/mol = 18.015 g/mol
Molar mass of bluestone (CuSO4·5H2O):
1 mol of CuSO4·5H2O = 1(63.546 g/mol) + 1(32.065 g/mol) + 4(15.999 g/mol) + 5(18.015 g/mol)
= 249.684 g/mol
Now, we can calculate the percent composition of water in bluestone:
Percent composition of water = (molar mass of water) / (molar mass of bluestone) x 100%
= (18.015 g/mol / 249.684 g/mol) x 100%
= 7.21%
Therefore, the theoretical percent composition of water in bluestone is approximately 7.21%.