Mckenna Forry & Megan Stanton
October 26, 2014
Honors Chemistry/ Pd. 8/ Mrs. Gazzara Chemical Reaction Lab Objective:to examine the chemical properties of hydrochloric acid and copper chloride, to identify the types of reactions that they undergo and to determine if the law of conservation of mass applies to a sample chemical reaction in one of these series. Materials:
● Aluminum shot
● ammonium hydroxide solution
● cupric chloride solution
● hydrochloric acid solution
● magnesium ribbon solution
● silver nitrate solution
● sodium carbonate solution
● sodium bicarbonate
● sodium hydroxide solution
● blue litmus paper
● 24well reaction plate
● beraltype pipet
● litmus paper
1. Place a 24well reaction plate on a piece of white paper
2. Using the beraltype pipet, add 1 mL (20 drops) of hydrochloric acid to each well, in 6 wells. Record color and appearance
3. Measure and record the initial temperature of the solution in first well, assuming that all solutions are the same temperature.
4. Test solution in 1st well using a piece of blue litmus paper, note initial color, then add 1 mL of sodium hydroxide solution using a pipet. Immediately place thermometer back into well and record any temperature changes. After 1 minute, test the solution again with a fresh piece of blue litmus paper.
5. In the second well, add a small amount of solid sodium bicarbonate. Observe and record all changes, including temperature. Once any initial reaction has subsides, continue to add more solution in small amounts until 3 portions have been added.
6. In the third well, add 1 ml, 20 drops, of silver nitrate solution. Record all observations.
7. Use forceps to add one small piece of mossy zinc to the fourth well. Record all observations. 8. Use forceps to add one small piece of aluminum shot to the fifth well. Record all observations. 9. In the sixth well, add one small piece of magnesium ribbon. Record all observations.
10. Using forceps remove any pieces of unreacted metal from wells 46. 1.
Part B: using a beraltype pipet, add 1 mL, 20 drops, of cupric chloride to each well, in 6 wells. record the color and appearance measure and record the initial temperature of the solution in first well, assuming that all solutions are the same temperature. use forceps to add one small piece of aluminum shot to 1st well. Record observations
Add small piece of crumpled aluminum foil to 2nd well. Record observations. use forceps to add one small piece of mossy zinc to 3rd well. Record observations.
Use a beraltypes pipet to add 1 mL (20 drops) of ammonium hydroxide solution to 4th well. Record observations use a beraltyped pipet to add i mL (20 drops) of sodium carbonate to 5th well. Record observations Use a beral typed piet to add 1 mL ( 20 drops) of silver nitrate solution to 6th well.
Using forceps, remove any pieces of unreacted metal from first three wells
Data/Observations Reactions with HCl: Well #
initial color=blue, pink; final color=blue
21.4o C initially, 27.7o C final temperature litmus paper turned pink, then back to blue exothermic 2
21.4o C initially, 18.8oC final temperature
bubbled stayed the same after 3 portions endothermic 3
21.4oC, temperature remained the same solution turned cloudy, white created a precipitatesilver
21.4oC 30.0oC final temperature bubbles, cloudy, zinc turned black produced hydrogen
21.4oC 21.0oC final temperature bubbles forming on shot produced hydrogen
21.4oC 66.3oC final temperature rapid bubbles, gas, produced hydrogen
Reactions with CuCl2 Well #
CuCl₂ + Aluminum