You are going to do a precipitate reaction to determine the % purity of the CaBr2 in a very old and crusty bottle labeled “Calcium Bromide.” You carefully measure out 20.000 grams of solid CaBr2 and add water until the total volume of the solution is 750.00 mL. You recently bought a guaranteed 1.0000 M solution of high quality Na3PO4. You measure out 200.00 mL of the 1.0000 M Na3PO4 and add 100.00mL of water to make a dilution. You are going to mix 50.00 mL of your CaBr2 solution with some of your diluted Na3PO4 and filter out the precipitate. Write the molecular equation (it is always implied that you must balance equations and include s, l, g, or aq)

Write the net ionic equation (it is always implied that you must balance equations and include s, l, g, or aq)

Calculate the molarity of the CaBr2 solution you made if the CaBr2 was 100% pure. (The molar mass of CaBr2 is 199.88 g/mol)

Calculate the molarity of the diluted Na3PO4 solution you made

In order to ensure that the reaction is limited by the 50.00 mL of the impure CaBr2 solution, calculate the minimum volume, in mL, of the diluted Na3PO4 solution must you use. To be extra, super sure, that the Na3PO4 is the excess reactant, you add double the minimum volume. What volume do you add?

What is the theoretical yield of the precipitate in grams? (The molar mass of Ca3(PO4)2 is 310.18 g/mol)

Pretend the only source of error is the impurity of the CaBr2. If 0.5320 grams of precipitate are obtained, what is the percent purity of the CaBr2?

Activity two: just lemons, inc. production here's a one-batch sample of just lemons lemonade production. determine the percent yield and amount of leftover ingredients for lemonade production and place your answers in the data chart. hint: complete stoichiometry calculations for each ingredient to determine the theoretical yield. complete a limiting reactant-to-excess reactant calculation for both excess ingredients. water sugar lemon juice lemonade percent yield leftover ingredients 946.36 g 196.86 g 193.37 g 2050.25 g 89% just lemons lemonade recipe equation: 2 water + sugar + lemon juice = 4 lemonade mole conversion factors: 1 mole of water = 1 cup = 236.59 g 1 mole of sugar = 1 cup = 225 g 1 mole of lemon juice = 1 cup = 257.83 g 1 mole of lemonade = 1 cup = 719.42 g show your calculations below. analysis questions 1. based on taste observations only, which ingredients were in excess in the lemonade samples in activity one? in activity one the excess substances for each sample were the water and sugar. 2. based on the data in activity two, which excess ingredients are affecting the taste of the lemonade in the sample batch? 3. what can just lemons, inc. do during production to reduce the amount of excess ingredients and improve the taste of their lemonade? 4. try to reduce the amount of leftover ingredients by changing the amount of one, two, or all three starting ingredients. show your stoichiometric calculations below. 5. during factory inspection, just lemons, inc. discovered that a water valve to the lemonade mixing station was not functioning. once they repair it, more water will enter the mixing station. from what you know about the limiting and excess ingredients for current lemonade production, what advice would you give engineers about the upcoming increase in water?