Hydrate Composition Lab

Started by Arhana, August 27, 2023, 11:06:51 PM

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Arhana

how to calculate mass of dish+anhydrous salt, mass of water, & mass of anhydrous salt

chenbeier

Quote from: Arhanadesai@gmail.com on August 27, 2023, 11:06:51 PMhow to calculate mass of dish+anhydrous salt, mass of water, & mass of anhydrous salt

The calculation of the NiCl2 * x H2O is wrong

Hydrat mass is 0,47 g
Dry salt mass is 0,256 g
Evaporated mass of H20  is the difference means 0,214 g

Molare mass NiCl2 = 129,6 g/mol

Balance 0,256 g/129,6g =0,214 g/(x*18 g/mol)

Solve for x = 6,01

The compound is Nickelchloride Hexa hydrate
NiCl2 * 6 H2O


uma

Mass of hydrate = (Mass of dish + hydrate)- Mass of empty dish
Mass of anhydrous =( Mass of dish + anhydrous salt) - Mass of empty dish
Mass of water =Mass of hydrate - Mass of anhydrous
 

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