- Theoretical weight of the precipitate Molecular weight of the product X Weight of the reacted substance gm Molecular weight of the reacted substanc - Experimental weight of the precipitate = 2.774 gm Experimental weight of the precipitat Theoretical weight of the precipitat -Yield of the reaction = X100 = -- Percentage weight of each element = Atomic eight of the elements X no of its atom X100 = Molecular weight of the comple

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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synthesis of Chloropentaamminecobalt(III)
The equations of the preparation of [Co(NH3)5CI]CI2 are written:
CoCl2 + NH4CI + NH3 + H2O2 → [Co(NH3)5CI]Cl2 + H2O
For experiment used:
- 3g of ammonium chloride
- In a fume hood, dissolve the weighted ammonium chloride in 10 mL
concentrated aqueous ammonia
- adding 3.00 g finely divided CoCl2-6H2O
- 7 mL of 30% hydrogen peroxide
10 ml of conc. HCl
- wash it three times with 30 mL diluted HCI (1:1).
Note: I collected 2.774 grams of Chloropentaamminecobalt(III) at the
end of this experiment.
Experimental Calculations:
1- Theoretical weight of the precipitate =
Molecular weight of the product X Weight of the reacted substance
gm
Molecular weight of the reacted substanc
2- Experimental weight of the precipitate = 2.774 gm
Experimental weight of the precipitat
3- Yield of the reaction =
X100 =
Theoretical weight of the precipitat
4- Percentage weight of each element =
Atomic eight of the elements X no of its atom
X100 =
Molecular weight of the comple
Transcribed Image Text:synthesis of Chloropentaamminecobalt(III) The equations of the preparation of [Co(NH3)5CI]CI2 are written: CoCl2 + NH4CI + NH3 + H2O2 → [Co(NH3)5CI]Cl2 + H2O For experiment used: - 3g of ammonium chloride - In a fume hood, dissolve the weighted ammonium chloride in 10 mL concentrated aqueous ammonia - adding 3.00 g finely divided CoCl2-6H2O - 7 mL of 30% hydrogen peroxide 10 ml of conc. HCl - wash it three times with 30 mL diluted HCI (1:1). Note: I collected 2.774 grams of Chloropentaamminecobalt(III) at the end of this experiment. Experimental Calculations: 1- Theoretical weight of the precipitate = Molecular weight of the product X Weight of the reacted substance gm Molecular weight of the reacted substanc 2- Experimental weight of the precipitate = 2.774 gm Experimental weight of the precipitat 3- Yield of the reaction = X100 = Theoretical weight of the precipitat 4- Percentage weight of each element = Atomic eight of the elements X no of its atom X100 = Molecular weight of the comple
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