(a) Using the equation from question 2 above and the numbers of moles calculated in question number 3 above, which reactant will be the limiting reactant? 4. KOH komuMUJAMO MLA So enl (b) How many moles of alum and H2 can theorctically (assume 100 % yield) be formcd? 2xmore Im Jm (d) How many grams of alum can thcoretically be formed? Based on this number and your actual yield, what is the percentage yield of alum produced in your experiment? -what we goi inexp Act Y % yield. X 100 Theor y \max amountI couldue producoo always basedO on limtin a react ield orontor than 100 % 2. Write answer to prelab question number 4 here after you compare your reaction with reaction (5) from the "CONCEPTS OF THE EXPERIMENT" section. aKOHaa) i 40H2SON99 → 34,6)+ aK aUsoHa 1240) 2 alls) +22H20Le)+ Calculate the number of moles of the chemical specified in each of the following: 3. QHachoo far Cale (a) H2SO4 in 5.0 mL of 9.0 M H2SO4 solution. O. 045 Moles (b) KOH in 12.5 mL of 1.4 M KOH solution. O.0175 mnoles (c) Water in 10 mL (about 10 g) of water. 0.555 moles (d) Aluminum present in the mass of aluminum you used in this experiment. 7859 Glum used in experiment O, 0103 moles 86

(a) Using the equation from question 2 above and the numbers of moles calculated in question number 3 above, which reactant will be the limiting reactant? 4. KOH komuMUJAMO MLA So enl (b) How many moles of alum and H2 can theorctically (assume 100 % yield) be formcd? 2xmore Im Jm (d) How many grams of alum can thcoretically be formed? Based on this number and your actual yield, what is the percentage yield of alum produced in your experiment? -what we goi inexp Act Y % yield. X 100 Theor y \max amountI couldue producoo always basedO on limtin a react ield orontor than 100 % 2. Write answer to prelab question number 4 here after you compare your reaction with reaction (5) from the "CONCEPTS OF THE EXPERIMENT" section. aKOHaa) i 40H2SON99 → 34,6)+ aK aUsoHa 1240) 2 alls) +22H20Le)+ Calculate the number of moles of the chemical specified in each of the following: 3. QHachoo far Cale (a) H2SO4 in 5.0 mL of 9.0 M H2SO4 solution. O. 045 Moles (b) KOH in 12.5 mL of 1.4 M KOH solution. O.0175 mnoles (c) Water in 10 mL (about 10 g) of water. 0.555 moles (d) Aluminum present in the mass of aluminum you used in this experiment. 7859 Glum used in experiment O, 0103 moles 86

Living by Chemistry

2nd Edition

ISBN:9781464142314

Author:Angelica M. Stacy

Publisher:Angelica M. Stacy

ChapterU4: Toxins: Stoichiometry, Solution Chemistry, And Acids And Bases

Section: Chapter Questions

Problem 20STP

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