A. Precipitation of CaC,0,11,0 fronthe Salt Misture Trial 2 Unknown number I. Ma

Question

A. Precipitation of CaC,0,11,0 fronthe Salt Misture Trial 2 Unknown number I. Mass of beaker (e) 2. Mass of beaker and salt mixture (g) 3 Mass of salt mixture (g) 4. Mass of filter paper (g) 5. Mass of filter paper and product after air-dried Trial I 102.278100, 567 103.268 101.581 102 5263 or oven-dried (g) 6. Mass of dried product (g) 7. Formula of dried product B. Determination of Limiting Reactant I. Limiting reactant in salt mixture (write complete formula) 2. Excess reactant in sale mixture (write complete formula) Trisl trial 2 2t Data Analysis 1. Moles of CaC,O,H,O (or CaC,O) precipitated (mol) 2. Moles of limiting reactant in salt mixture (mo) formula of limiting hydrate_ o.229 0.337 3. Mass of limiting reactant in salt mixture (g) 4. Mass of excess reactant in salt mixture (g) . formula of excess hydrate 5. Percent limiting reactant in salt mixture (%) 6. Percent excess reactant in salt mixture (%) 7. Mass of excess reactant that reacted (g) 8. Mass of excess reactant, unreacted (g) Show calculations for Trial I on next page. Experiment 8 131 103

Explanation / Answer

A.

6.

Mass of dried product = 0.547–0.361 = 0.186 grams

7. Formula of dried product is CaC2O4

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