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11 Nov 2019
CHEMI FORMULA OF A HYDRATE LESSON for Prelab.a5 I Definitions A Hydrate is a compound in which a salf and water are chemically combined in Coefficients are mols deftinite proportions (The dot means attached): 1CoCh. 6H,O B. Anhydrous means water free: C. 1 mol 6.02 x 10 items Il Formula of a Hydrate Problem CoCl 100000 g of hydrate is heated to drive off the water molecules(Actually can't) 6.0000 g of anhydrous salt remains. A. If 4.00 10.0000 g hydrate 6.0000 g anhydrous g water + H,O The formula of the hydrate can be calculated by converting the experimental masses of anhydrous salt and water to mol coefficients. 6.0000 g FeCl . coco 02 mols FeC,. 0,22 2 mols g H2O Reconfigure the fractional mols into whole number mols with the coefficient on the anhydrous salt portion equal to 1 mols H,0 Mass to mol problems to fill in the above blanks conversion factor comes from the periodic table l mols FeC, o mols H,Co 6.0000 g FeCl, B. % water in hydrate (by mass)-water (g) , hydrate (g) . 100% 19
CHEMI FORMULA OF A HYDRATE LESSON for Prelab.a5 I Definitions A Hydrate is a compound in which a salf and water are chemically combined in Coefficients are mols deftinite proportions (The dot means attached): 1CoCh. 6H,O B. Anhydrous means water free: C. 1 mol 6.02 x 10 items Il Formula of a Hydrate Problem CoCl 100000 g of hydrate is heated to drive off the water molecules(Actually can't) 6.0000 g of anhydrous salt remains. A. If 4.00 10.0000 g hydrate 6.0000 g anhydrous g water + H,O The formula of the hydrate can be calculated by converting the experimental masses of anhydrous salt and water to mol coefficients. 6.0000 g FeCl . coco 02 mols FeC,. 0,22 2 mols g H2O Reconfigure the fractional mols into whole number mols with the coefficient on the anhydrous salt portion equal to 1 mols H,0 Mass to mol problems to fill in the above blanks conversion factor comes from the periodic table l mols FeC, o mols H,Co 6.0000 g FeCl, B. % water in hydrate (by mass)-water (g) , hydrate (g) . 100% 19
Irving HeathcoteLv2
24 Mar 2019