balance lab
Ashley Huston
ILab, Week #2
CATIONS AND ANION LAB
Introduction
The purpose of this lab is to demonstrate a double-replacement reaction of ionic compounds. In this experiment, you will combine two ionic compounds. Both compounds are soluble in water. If a response happens between these two compounds, then a precipitate will form because one of the two resultant compounds is not soluble in water. This is a hint that a reaction took place. Cations are positively charged ions that are attracted to the cathode in electrolysis. Anions are negatively charged ions that are attracted to the anode in electrolysis. These two are opposite ions that attract to one another.
In this lab research, I learned that the following reaction will happen: lead nitrate + potassium chromate à potassium nitrate + lead chromate, the balanced chemical reaction is: Pb (NO3)2 + K2CrO4 --> 2 KNO3 + PbCrO4
Procedure
Materials:
- (1) 100ml Beaker
- (1) 50 ml(s) of potassium chromate 1M solution
- (1) 50 ml of lead (II) nitrate 1M
- (1) 250 mL Erlenmeyer flask
- (1) Buchner funnel
- (1) Test tube Procedure:
1. Gather required materials.
2. Add 50 ml(s) of potassium chromate 1M solution in a 100ml beaker
3. Add 50 ml of lead (II) nitrate 1M into the same 100 mL beaker
4. Filter the resulting precipitate into a 250 mL Erlenmeyer flask with a Buchner funnel.
5. Obtain the weight of the resulting precipitate by removing the Buchner funnel and placing the resulting precipitate into a test tube
Observations and Results
During the experiment I observed 50mls of clear solution, be combined to another 50ml of solution. That bubbled up and only filtered out 50mls into an Erlenmeyer flask. The appearance of the filtered precipitate exhibited a small amount of a yellow substance. The weight of the filtered precipitate was: 16.160g
Discussion In this experiment, the appearance of the filtered precipitate exhibited a small amount of a yellow
ILab, Week #2
CATIONS AND ANION LAB
Introduction
The purpose of this lab is to demonstrate a double-replacement reaction of ionic compounds. In this experiment, you will combine two ionic compounds. Both compounds are soluble in water. If a response happens between these two compounds, then a precipitate will form because one of the two resultant compounds is not soluble in water. This is a hint that a reaction took place. Cations are positively charged ions that are attracted to the cathode in electrolysis. Anions are negatively charged ions that are attracted to the anode in electrolysis. These two are opposite ions that attract to one another.
In this lab research, I learned that the following reaction will happen: lead nitrate + potassium chromate à potassium nitrate + lead chromate, the balanced chemical reaction is: Pb (NO3)2 + K2CrO4 --> 2 KNO3 + PbCrO4
Procedure
Materials:
- (1) 100ml Beaker
- (1) 50 ml(s) of potassium chromate 1M solution
- (1) 50 ml of lead (II) nitrate 1M
- (1) 250 mL Erlenmeyer flask
- (1) Buchner funnel
- (1) Test tube Procedure:
1. Gather required materials.
2. Add 50 ml(s) of potassium chromate 1M solution in a 100ml beaker
3. Add 50 ml of lead (II) nitrate 1M into the same 100 mL beaker
4. Filter the resulting precipitate into a 250 mL Erlenmeyer flask with a Buchner funnel.
5. Obtain the weight of the resulting precipitate by removing the Buchner funnel and placing the resulting precipitate into a test tube
Observations and Results
During the experiment I observed 50mls of clear solution, be combined to another 50ml of solution. That bubbled up and only filtered out 50mls into an Erlenmeyer flask. The appearance of the filtered precipitate exhibited a small amount of a yellow substance. The weight of the filtered precipitate was: 16.160g
Discussion In this experiment, the appearance of the filtered precipitate exhibited a small amount of a yellow