- 4 Calculate The Theoretical Mass Of Product For A Sodium Bicarbonate Sodium Carbonate Carbon Dioxide Water Balance 1 (88.08 KiB) Viewed 42 times
4. Calculate the theoretical mass of product for a. sodium bicarbonate sodium carbonate + carbon dioxide + water Balanced Equation: Molar Mass of Sodium bicarbonate: Molar Mass of the Solid Product: Theoretical Mass of Solid Product if your unknown is sodium bicarbonate: b. potassium bicarbonate potassium carbonate + carbon dioxide + water Balanced Equation: Molar Mass of Potassium bicarbonate: Molar Mass of the Solid Product: Theoretical Mass of the Solid Product if your unknown is potassium bicarbonate.
c. barium chloride dihydrate barium chloride + water Balanced Equation: Molar Mass of Barium Chloride Dihydrate: Molar Mass of the Solid Product: Theoretical Mass of Solid Product if your unknown is barium chloride dihydrate: d. calcium sulfate dihydrate calcium sulfate + water Balanced Equation: Molar Mass of Calcium Sulfate Dihydrate: Molar Mass of the Solid Product: Theoretical Mass of Solid Product if your unknown is calcium sulfate dihydrate 3
Name: Kevin Zarnegar Unknown Number Mass, Evaporating Dish and Unknown Mass, Evaporating Dish Mass, Unknown* Mass, Evaporating Dish and Product-1st heating Mass, Evaporating Dish and Product-2nd heating Mass, Evaporating Dish and Product-3rd heating (if needed) Mass, Product (experimental)* Mass, Product (theoretical)* (show your work on the last two pages) Percent Yield* Identification of Unknown Report Form - What's My Formula? 1. Mass of Unknown 114.979-112.015= 2.96grams Calculations Show the calculations for each of the entries in the Data Table marked with below. 2. Mass of Experimental Product 3. Percent Yield Section: 4361 114.479 112.012 2.4ograms 5541 114.97grams 112.01grams 2.96grams 114.47 grams 114.47grams 2.46 grams 1
Testing this What's My Formula? Background You will be given an unknown that is one of these four salts: sodium bicarbonate, potassium bicarbonate, barium chloride dihydrate, or calcium sulfate dihydrate. You will heat the salt in an evaporating dish, causing a chemical reaction to occur and leaving a solid product in the dish. You will use mass and mole relationships for chemical equations to predict how much solid product you would obtain for each of the four possible salts. Comparing your experimental mass with your calculated theoretical masses, you will identify your unknown salt. Finally, you will calculate the percent yield for your reaction. Equipment Bunsen burner ring stand. wire gauze and ring evaporating dish Procedure 1. Wash, rinse, dry, and weigh your evaporating dish. 2. Obtain an unknown salt from your instructor and record its number. Transfer the unknown salt to the evaporating dish and weigh it. H 3. Place the evaporating dish containing the unknown salt on a wire gauze on a ring attached to a ring stand. Heat the evaporating dish gently for five minutes and then more strongly for 10-15 minutes longer. Let the evaporating dish and product sit on the wire gauze and cool to room temperature. Setting the hot evaporating dish on the countertop will probably make it crack! 4. When cool, weigh and record its mass. 5. To make sure the reaction has gone to completion, heat the evaporating dish and product again for five minutes, allow it to cool to room temperature, weigh, and record its mass. The two weighings should agree within 0.05 g. If they do not, repeat the heating and weighing until they do. Dispose of the solid in the inorganic solid waste container.