a. The Mass of water driven off = 0.15 g
b. Moles of anhydrate = 0.00257 moles
c. Moles of water driven off is 0.00833 moles
d. There are 3 moles of water within the crystalline structure of one molecule of the hydrated salt.
e. The molecular formula of the hydrated salt will be X.3H₂O
What is the mass of water driven off from the hydrated salt?
a. The mass of water driven off from the hydrated salt is:
Mass of water driven off = 0.5 g - 0.35 g
Mass of water driven off = 0.15 g
b. Molecular mass of salt = 136 g/mol
moles of anhydrate = 0.35/136
Moles of anhydrate = 0.00257 moles
c. Moles of water driven off = mass/molar mass
molar mass of water = 18 g/mol
Moles of water driven off = 0.15/18
Moles of water driven off = 0.00833 moles
d. Moles of water within the crystalline structure of one molecule of the hydrated salt is determined by converting to whole number mole ratio by dividing with the smallest ratio,
Salt to water ratio = 0.00257 /0.00257 : 0.00833/0.00257
Salt to water ratio = 1 : 3
Therefore, there are 3 moles of water within the crystalline structure of one molecule of the hydrated salt.
e. Assuming the anhydrous salt is X, the molecular formula of the hydrated salt will be X.3H₂O
Learn more about hydrated salts at: https://brainly.com/question/14447094
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