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A-4
ADVANCE STUDY ASSIGNMENT:
You will need to be able to answer the following questions to complete this experiment successfully.
1.
Read the safety regulations material (page 6 to 8).
2.
How many grams of copper(II) nitrate, Cu(NO3)2, can be made if 1.500 g of copper is used? Answer: 4.427 g.
3.
How many moles of sodium carbonate (Na2CO3) will be needed to completely convert the
Cu(NO3)2 in question 2 into CuCO3?
Answer: 0.02361 moles
4.
How many grams of Na2CO3 will be needed to completely convert the Cu(NO3)2 in question 2 into
CuCO3?
Answer: 2.502 g.
5.
If the concentration of the Na2CO3 solution is 2.0 M, what volume of Na2CO3 will be required for
complete reaction in question 3?
Answer: 12 mL
6.
In a filtration, what is the precipitate, and what is the filtrate?
7.
Distinguish between the terms “reagent” and “reactant”. Answer: A reactant is a molecule or ion
that is converted (via chemical reaction) into product(s). A reagent is any substance added to
chemical system which may or may not participate in a chemical reaction.
Reminder: The evaluation of Experiment A will be based on your laboratory performance, Observations
Sheet, quality of copper(II) sulfate product, and a laboratory quiz. The quiz for Experiment A will be given
at the beginning of the next laboratory period. To prepare for the quiz, review the laboratory lecture
information, the Advance Study Assignment, the experimental procedure, and the Report for this
experiment.
REAGENTS AND EQUIPMENT
copper powder
Buchner funnel
6.0 M nitric acid (HNO3)
filter paper (5.5 cm)
2.0 M sodium carbonate (Na2CO3 )
red, blue litmus paper
6.0 M sulfuric acid (H2SO
4
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