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11 Nov 2019
a. A sample of a CaCl 2H,O/K C,O,H0 solid salt mixture is dissolved in 150 mL of deionized water previously adjusted to a pH that is basic. The precipitate, after having been filtered, was air-dried and weighed. Data for Trial 1 were obtained as shown. Complete the following table. (See Report Sheet.) Record calculated values with the cor- rect number of significant figures. A. Precipitation of CaC,0,H,O from the Salt Mixture Calculation Zone 3. Mass of salt mixture (g) 4. Mass of filter paper (g) 5. Mass of filter paper and CaGO4.H2ã(g) 6. Mass of air-dried CaC, H,O (g) - 0879 ã¼1896 Data Analysis, I B. Determination of Limiting Reactant Data Analysis, 3 1. Limiting reactant in salt mixture 2. Excess reactant in salt mixture CaCl 2H,O Data Analysis 1. Moles of Ca,0H, precipitated (mol) Show calculation. Data Analysis, 4. 2. Moles of limiting reactant in salt mixture (mol) 3. Mass of limiting reactant in salt mixture (g) 4. Mass of excess reactant in salt mixture (g) See equation 8.1 Show calculation. Data Analysis, 5. Equals mass of salt mixture minus mass of limiting reactant Show calculation 5. Percent limiting reactant in salt mixture (%) Show calculation. 6, Percent excess reactant in salt mixture (%) 4. b. For Trials 2 and 3, the percent CaCl2-2H20 in the mixture was 39.7% and 28.4% respectively. a. What is the average percent of CaCl 2H,O in the sample? Data Analysis, B.
a. A sample of a CaCl 2H,O/K C,O,H0 solid salt mixture is dissolved in 150 mL of deionized water previously adjusted to a pH that is basic. The precipitate, after having been filtered, was air-dried and weighed. Data for Trial 1 were obtained as shown. Complete the following table. (See Report Sheet.) Record calculated values with the cor- rect number of significant figures. A. Precipitation of CaC,0,H,O from the Salt Mixture Calculation Zone 3. Mass of salt mixture (g) 4. Mass of filter paper (g) 5. Mass of filter paper and CaGO4.H2ã(g) 6. Mass of air-dried CaC, H,O (g) - 0879 ã¼1896 Data Analysis, I B. Determination of Limiting Reactant Data Analysis, 3 1. Limiting reactant in salt mixture 2. Excess reactant in salt mixture CaCl 2H,O Data Analysis 1. Moles of Ca,0H, precipitated (mol) Show calculation. Data Analysis, 4. 2. Moles of limiting reactant in salt mixture (mol) 3. Mass of limiting reactant in salt mixture (g) 4. Mass of excess reactant in salt mixture (g) See equation 8.1 Show calculation. Data Analysis, 5. Equals mass of salt mixture minus mass of limiting reactant Show calculation 5. Percent limiting reactant in salt mixture (%) Show calculation. 6, Percent excess reactant in salt mixture (%) 4. b. For Trials 2 and 3, the percent CaCl2-2H20 in the mixture was 39.7% and 28.4% respectively. a. What is the average percent of CaCl 2H,O in the sample? Data Analysis, B.
Reid WolffLv2
14 Feb 2019