Cu Recycle Lab
Cu Metal Recycling Lab
Mr. Nelson – Chemistry
Purpose: The purpose of this lab is to carry out an extensive series of reactions based on the element copper. These reactions include; synthesis, decomposition, single and double replacement. In this experiment, recycling will also be introduced.
Procedure: See attached Story board.
Data and Observations and Data Analysis:
Step
Word Equation
1
Balanced
Chemical
Equation
Type of
Reaction
Observations
Copper + nitric
Cu + 4HNO3 acid à copper(II) à Cu(NO3)2 + nitrate + nitrogen 2NO2 + 2H2O dioxide + water
Combination??
-The liquid inside seems to change to green
-Brown gas seems to form
-Bubbles seem to form -Green liquid changes to blue
5
Copper(II) nitrate + sodium hydroxide à copper(II) hydroxide + sodium nitrate
Cu(No3)2
+ 2NaOH à
Cu(OH)2 +
2NaNO3
Double
Replacement
-A solid seems to form 6
Copper(II) hydroxide à copper(II) oxide
+ water
Cu(OH)2 à CuO
+ H2O
Decomposition
-The liquid turns black 10
Copper(II) oxide
+ hydrochloric acid à copper(II) chloride + water
CuO + 2 HCl à
CuCl2 + H2O
Double
Replacement
-The liquid clears up and turns blue
11
Copper(II) chloride + aluminum à copper + aluminum 3CuCl2 + 2Al à
3 Cu + 2 AlCl3
Single
Replacement
-When the aluminum wire was added, the liquid began to bubble. chloride
Analysis Questions
1.
In general, list the observations that alerted you that some type of chemical change was occurring.
Change in color, change in temperature, forming of solids.
2.
Did each reaction show all the kinds of changes you listed above? Use your observations to justify your answer.
In Step 1, the liquid changes colors and a gas forms. In Step 5, a precipitate is formed. In Step 11, bubbles began to form.
3.
What happened to the hydrogen gas generated in Step 11 of the Procedure?
The hydrogen gas is released into the surrounding air.
Mr. Nelson – Chemistry
Purpose: The purpose of this lab is to carry out an extensive series of reactions based on the element copper. These reactions include; synthesis, decomposition, single and double replacement. In this experiment, recycling will also be introduced.
Procedure: See attached Story board.
Data and Observations and Data Analysis:
Step
Word Equation
1
Balanced
Chemical
Equation
Type of
Reaction
Observations
Copper + nitric
Cu + 4HNO3 acid à copper(II) à Cu(NO3)2 + nitrate + nitrogen 2NO2 + 2H2O dioxide + water
Combination??
-The liquid inside seems to change to green
-Brown gas seems to form
-Bubbles seem to form -Green liquid changes to blue
5
Copper(II) nitrate + sodium hydroxide à copper(II) hydroxide + sodium nitrate
Cu(No3)2
+ 2NaOH à
Cu(OH)2 +
2NaNO3
Double
Replacement
-A solid seems to form 6
Copper(II) hydroxide à copper(II) oxide
+ water
Cu(OH)2 à CuO
+ H2O
Decomposition
-The liquid turns black 10
Copper(II) oxide
+ hydrochloric acid à copper(II) chloride + water
CuO + 2 HCl à
CuCl2 + H2O
Double
Replacement
-The liquid clears up and turns blue
11
Copper(II) chloride + aluminum à copper + aluminum 3CuCl2 + 2Al à
3 Cu + 2 AlCl3
Single
Replacement
-When the aluminum wire was added, the liquid began to bubble. chloride
Analysis Questions
1.
In general, list the observations that alerted you that some type of chemical change was occurring.
Change in color, change in temperature, forming of solids.
2.
Did each reaction show all the kinds of changes you listed above? Use your observations to justify your answer.
In Step 1, the liquid changes colors and a gas forms. In Step 5, a precipitate is formed. In Step 11, bubbles began to form.
3.
What happened to the hydrogen gas generated in Step 11 of the Procedure?
The hydrogen gas is released into the surrounding air.