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percentage of water crystallization?
A student performed an experiment to find the percentage of water crystallization in a sample of iron(II) sulphate(VI) (FeSO4 .XH2O).He obtained the following data:
Mass of Crucible: 29.65g
Mass of crucible plus iron sulphate (before heating):34.50g
Mass of crucible plus iron sulphate (after heating):31.85g
percentage of water crystallization:??
3 Answers
- Dr.ALv 71 decade agoFavorite Answer
Mass FeSO4 + water = 34.50 - 29.65 = 4.85 g
Mass FeSO4 = 31.85 - 29.65 =2.2 g
mass water = 4.85 - 2.2 =2.65 g
% water = 2.65 x 100 / 4.85 =54.6
- 5 years ago
Use: (water mass/alum mass)x100% You want the percentage mass of water in the alum, not the anhydrous salt.
