2.5 g of ammonium chloride and 5.02 g of powdered hexaaquacobalt(II) chloride (CoCl2 * 6 H2O)...
2.5 g of ammonium chloride and 5.02 g of powdered hexaaquacobalt(II) chloride (CoCl2 * 6 H2O) dissolved in 15 mL of 15M aqueous ammonia.
4 mL of 30% hydrogen peroxide is added from a dropper pipette. 2.5 g of sodium nitrite added to the solution while stirring to dissolve.
What is theoretical yield of cobalt complex?
Homework Answers
The complex formed in this synthesis is (Co(NH3)6)Cl3
Molar mass of the complex is 267.4 g/mole
In this synthesis limiting reagent is Cobalt chloride.
Molar mass of cobalt chloride 237.923 g/mole
Mass of cobalt chloride = 5.02/237.923 = 0.021 moles.
Thereotical yield = moles of cobalt chloride*molar mass of product
= 0.021*267.4 = 5.6154 grams.
Add Answer to:
2.5 g of ammonium chloride and 5.02
g of powdered hexaaquacobalt(II) chloride (CoCl2
* 6 H2O)...
1. CoCl2*6H2O reacting with ammonium chloride, ammonia, and hydrogen peroxide to form hexaamminecobalt(III) chloride and water...
1. CoCl2*6H2O reacting with ammonium chloride, ammonia, and hydrogen peroxide to form hexaamminecobalt(III) chloride and water 2. cobalt (II) nitrate hexahydrate reacting with ammonium carbonate, concentrated ammonia, and hydrogen peroxide and water to form [Co(NH3)4CO3]NO3 Both synthesis above include hydrogen peroxide. What is the purpose of this hydrogen peroxide? Could we use a different cobalt starting material and skip the addition of hydrogen peroxide?
4. In Part 1 of this experiment, CoCl, 6H,O reacts with ammonium chloride, ammonium hydroxide, and...
4. In Part 1 of this experiment, CoCl, 6H,O reacts with ammonium chloride, ammonium hydroxide, and hydrogen peroxide to produce [Co(NH3)Cl3 and water. a) Write the balanced equation for this reaction. b) What is the purpose of adding the charcoal? c) To the test tube containing CoCl2 6H20, NH Cl, and NH OH, 3 mL of 10% H2O2 is added. Why must the H2O, be added slowly, in 1 mL portions? What is the purpose of adding the H2O2? Go...
If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given...
If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given temperature, how many grams of NaCl can be dissolved in 250.0 mL of H2O? If the solubility of glucose (C6H12O6) is 120.3 g/100 mL of H2O at a given temperature, how many grams of C6H12O6 can be dissolved in 75.0 mL of H2O? Only 0.203 mL of C6H6 will dissolve in 100.000 mL of H2O. Assuming that the volumes are additive, find the volume/volume...
********PLEASE PLEASE PLEASE ANSWER 1-3****** THANK YOUU!!! 1a.When 22.0 mL of a 8.66×10-4 M cobalt(II) iodide...
********PLEASE PLEASE PLEASE ANSWER 1-3****** THANK YOUU!!! 1a.When 22.0 mL of a 8.66×10-4 M cobalt(II) iodide solution is combined with 25.0 mL of a 1.92×10-4 M ammonium sulfidesolution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to______ 1b.When 22.0 mL of a 6.52×10-4M ammonium iodide solution is combined with 12.0 mL of a 1.05×10-4M lead acetatesolution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to_____. 2a.A...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which of the following depicts a small representative volume of a 0.10 M aqueous solution of ammonium sulfate? Water molecules have not been included. For each incorrect answer, state why it is incorrect; be as specific as possible. A в C о ‑ G F None of B these O ODO epresents an ato At 25°C in a 50 mL Erlenmeyer flask were combined 1.050...
Calculate the theoretical yield for Orange II (mw= 422g/mol; experimental weight of orange II azo-dye=0.4g). EXPERIMENTAL...
Calculate the theoretical yield for Orange II (mw= 422g/mol;
experimental weight of orange II azo-dye=0.4g).
EXPERIMENTAL Calculate the theoretical yield before the lab. Caution: Orange II dyes clothing and other organic materials a permanent unique orange. As a measure of your technique, points may be subtracted for orange hands, etc. 1 DIAZOTIZATION OF SULFANILIC ACID Dissolve 0.4 g of anhydrous sodium carbonate in 7.5 mL of H.O. Use a 25 mL Erlenmever flask. 2. Add 0.45 g of sulfanilic acid...
5. To make a saturated aqueous solution of ammonia, 470 g of ammonia are dissolved with...
5. To make a saturated aqueous solution of ammonia, 470 g of ammonia are dissolved with one liter of water. The density of the resulting solution is 0.89 g/mL. What is the molarity of the solution? Hint: Think about the two quantities you need to calculate the molarity of a solution, then figure out how to get those two quantities from the information supplied in the problem, so that you can calculate the molarity. 6. You found a 1 pound...
POSSIBLE POINTS: In part A, the synthesis of hexamminecobalt(III) chloride, [CO(NH3)6]Cly, your reactants included the following....
POSSIBLE POINTS: In part A, the synthesis of hexamminecobalt(III) chloride, [CO(NH3)6]Cly, your reactants included the following. Notice that these are the values given in the manual, and you can assume you measured it out to the same precision given. • 7.5 mL of 1.5M cobalt(II) chloride solution • 0.3 g of solid ammonium chloride • 0.15 g of activated charcoal (a catalyst) • 7.5 mL of 15 M NH3 . and 7.5 mL of 10% hydrogen peroxide. After synthesizing the...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L of solution: a. What is the molarity of the solution? b. How many moles of Nail are contained in 0.0100 L of the above solution? What volume (L) of this NaCl solution would contain 0.150 moles of NaCl? 2. 255 g of NHCl is dissolved in enough water to make 7500 ml of solution What is the molarity of the solution b. How many...
2 points 9. Using your textbook and class notes as a reference, indicate if cresol red...
2 points 9. Using your textbook and class notes as a reference, indicate if cresol red would be a good acid-base indicator for this titration. Justify your answer using your knowledge of titrations curves and indicators. if we use cresol red which has a ph range of 8-10.5 it can good indicator because our titration is Naoh and ASA i.e strong base and weak acid so equivalence point is around ph=9. Cresol red can indicate this equivalence point by changing...
4. In Part 1 of this experiment, CoCl, 6H,O reacts with ammonium chloride, ammonium hydroxide, and hydrogen peroxide to produce [Co(NH3)Cl3 and water. a) Write the balanced equation for this reaction. b) What is the purpose of adding the charcoal? c) To the test tube containing CoCl2 6H20, NH Cl, and NH OH, 3 mL of 10% H2O2 is added. Why must the H2O, be added slowly, in 1 mL portions? What is the purpose of adding the H2O2? Go...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which of the following depicts a small representative volume of a 0.10 M aqueous solution of ammonium sulfate? Water molecules have not been included. For each incorrect answer, state why it is incorrect; be as specific as possible. A в C о ‑ G F None of B these O ODO epresents an ato At 25°C in a 50 mL Erlenmeyer flask were combined 1.050...
Calculate the theoretical yield for Orange II (mw= 422g/mol;
experimental weight of orange II azo-dye=0.4g).
EXPERIMENTAL Calculate the theoretical yield before the lab. Caution: Orange II dyes clothing and other organic materials a permanent unique orange. As a measure of your technique, points may be subtracted for orange hands, etc. 1 DIAZOTIZATION OF SULFANILIC ACID Dissolve 0.4 g of anhydrous sodium carbonate in 7.5 mL of H.O. Use a 25 mL Erlenmever flask. 2. Add 0.45 g of sulfanilic acid...
POSSIBLE POINTS: In part A, the synthesis of hexamminecobalt(III) chloride, [CO(NH3)6]Cly, your reactants included the following. Notice that these are the values given in the manual, and you can assume you measured it out to the same precision given. • 7.5 mL of 1.5M cobalt(II) chloride solution • 0.3 g of solid ammonium chloride • 0.15 g of activated charcoal (a catalyst) • 7.5 mL of 15 M NH3 . and 7.5 mL of 10% hydrogen peroxide. After synthesizing the...
Solution Worksheet Name 1.12.5 g of NaCl is dissolved in enough water to make 0,683 L of solution: a. What is the molarity of the solution? b. How many moles of Nail are contained in 0.0100 L of the above solution? What volume (L) of this NaCl solution would contain 0.150 moles of NaCl? 2. 255 g of NHCl is dissolved in enough water to make 7500 ml of solution What is the molarity of the solution b. How many...
2 points 9. Using your textbook and class notes as a reference, indicate if cresol red would be a good acid-base indicator for this titration. Justify your answer using your knowledge of titrations curves and indicators. if we use cresol red which has a ph range of 8-10.5 it can good indicator because our titration is Naoh and ASA i.e strong base and weak acid so equivalence point is around ph=9. Cresol red can indicate this equivalence point by changing...
Most questions answered within 3 hours.
-
5. Discuss the use of fault tree analysis (FTA) for risk
assessment (maximum one paragraph).
asked 44 minutes ago -
Given that a sample of aluminium oxide has a Young's modulus of
393 GPa and a...
asked 2 hours ago -
At a certain temperature, the equilibrium constant, Kc, for this
reaction is 53.3.
H2(g)+I2(g)−⇀↽−2HI(g)Kc=53.3
At this...
asked 3 hours ago -
Question1 ) The STL provides similiar classes called stack and
queue, both of which gave functions...
asked 4 hours ago -
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 4 hours ago -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 6 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 6 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 7 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 7 hours ago -
A space vehicle is coasting at a constant velocity of 18.1 m/s
in the +y direction...
asked 8 hours ago -
5) Use the following balanced equation to answer questions
(a)-(i).
3 Cu(s) + 8 HNO3(aq) →...
asked 8 hours ago -
A three-year maturity bond with a 12% annual coupon rate is
currently traded at par $1000...
asked 8 hours ago