CATIONS AND ANION LAB
iLab, Week #2
CATIONS AND ANION LAB
Introduction
In this experiment we will be mixing two ionic compounds: potassium chromate and lead nitrate; both are soluble in water. This will be demonstrating a double-replacement reaction/reactions between cations and anions. If a reaction does occur it will form a precipitate due to one of the newly formed compounds not being soluble in water.
Once the experiment was completed there was what appears to be a “solid” substance remaining in the test tube. This shows that a reaction occurred.
Procedure
1. Once in the ChemLab-Cations and anion reactions. You will need to obtain a 100mL beaker and 50mL of potassium chromate. This will be done by clicking on the Chemicals section of the toolbar, then selecting 1M Potassium Chromate, change the volume to 50mL, then select to add the Potassium Chromate to a new 100mL beaker.
2. Next, you will need to left click on the beaker, then select Chemicals from the toolbar, select 1M Lead Nitrate, change the volume to 50mL (ensure that the window indicated that it will be placed in the existing beaker.
3. Now you will need to filter the precipitate. Obtain an Erlenmeyer flask and a Buchner funnel. This will be done by selecting from the Equipment section on the toolbar and selecting Erlenmeyer Flask-250mL. Next, right click on the flask and select Buchner Funnel. Right click on the beaker and select Pour/Decant. Move the beaker above the funnel and you will see a white area at the bottom of the flask.
4. Lastly, you will need to record the weight of the precipitate. Right click on the flask and select Buchner Funnel. A message will appear asking if “An amount of solid was found present in the filter, what action would you like to take?”, select place solid into 50mL Test Tube. You will now see the Test Tube with the precipitate in the bottom, right click on the Test Tube and click on show weight, the weight of the precipitate will appear, record
CATIONS AND ANION LAB
Introduction
In this experiment we will be mixing two ionic compounds: potassium chromate and lead nitrate; both are soluble in water. This will be demonstrating a double-replacement reaction/reactions between cations and anions. If a reaction does occur it will form a precipitate due to one of the newly formed compounds not being soluble in water.
Once the experiment was completed there was what appears to be a “solid” substance remaining in the test tube. This shows that a reaction occurred.
Procedure
1. Once in the ChemLab-Cations and anion reactions. You will need to obtain a 100mL beaker and 50mL of potassium chromate. This will be done by clicking on the Chemicals section of the toolbar, then selecting 1M Potassium Chromate, change the volume to 50mL, then select to add the Potassium Chromate to a new 100mL beaker.
2. Next, you will need to left click on the beaker, then select Chemicals from the toolbar, select 1M Lead Nitrate, change the volume to 50mL (ensure that the window indicated that it will be placed in the existing beaker.
3. Now you will need to filter the precipitate. Obtain an Erlenmeyer flask and a Buchner funnel. This will be done by selecting from the Equipment section on the toolbar and selecting Erlenmeyer Flask-250mL. Next, right click on the flask and select Buchner Funnel. Right click on the beaker and select Pour/Decant. Move the beaker above the funnel and you will see a white area at the bottom of the flask.
4. Lastly, you will need to record the weight of the precipitate. Right click on the flask and select Buchner Funnel. A message will appear asking if “An amount of solid was found present in the filter, what action would you like to take?”, select place solid into 50mL Test Tube. You will now see the Test Tube with the precipitate in the bottom, right click on the Test Tube and click on show weight, the weight of the precipitate will appear, record