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Experimental Chemistry Calculations Quiz

12 Questions

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Experimental Chemistry Calculations Quiz

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Questions and Answers

What is the theoretical weight of the precipitate?

Not provided in the experiment (correct)
3.2 mmol
1.2 g
6.3 g

What does the experimental weight of the precipitate represent?

The weight of potassium dichromate
The actual weight obtained through the experiment (correct)
The weight of potassium oxalate monohydrate
The weight of oxalic acid dihydrate

What percentage yield of the reaction was obtained in the experiment?

22.1%
16% (correct)
Not provided in the experiment
6.3%

What does the percentage weight of each element signify in this context?

The percentage of each element in the reaction product (B) Signup and view all the answers

What is the purpose of the experiment described?

To synthesize chloropentaamminecobalt(III) chloride (B) Signup and view all the answers

Which ion is more stable than cobalt(III) for simple salts of cobalt?

Cobalt(II) ion (C) Signup and view all the answers

What is the formula for the theoretical weight of the precipitate?

$Molar weight of the precipitate \times Weight of the reactant$ (C) Signup and view all the answers

What stabilizes the higher oxidation state of cobalt(III)?

Complexation (A) Signup and view all the answers

What does the theoretical weight of the precipitate represent?

The weight of the precipitate as predicted by theory (C) Signup and view all the answers

What is the experimental weight of the precipitate?

The weight of the precipitate as calculated by experiments (D) Signup and view all the answers

How is the yield of the reaction calculated?

By calculating the percentage of theoretical weight (C) Signup and view all the answers

What does the percentage weight of each element represent?

The percentage composition of the precipitate (C) Signup and view all the answers