Rank the following compounds in terms of their theoretical mass percent water. Rank the compounds from least percentage of water to greatest?
CaCl2 2H2O, COCl2 • 6H2O, CuSO4 • 5H2O, MgSO4 • 7H2O, Sr(NO3)2 • 4H2O.
- Anonymous11 months ago
Calculate the mass % of water in each. Rank in order.
Take the example of CuSO4 • 5H2O. 1 mole of CuSO4 has 5 moles of water.
1 mole of CuSO4 = 159.61 g. 5 moles of water = 5 * 18.016 g
mass % water = ( 5 * 18.016 g ) / (1 * 159.61 g + 5 * 18.016 g ) * 100
Repeat for the others. You might be able to do it just with using Google.