- Today S Lab In This Activity You Will Be Given A Vial With A Mixture Of Copper Ii Chloride And Sodium Phosphate Triba 1 (23.54 KiB) Viewed 10 times
- Today S Lab In This Activity You Will Be Given A Vial With A Mixture Of Copper Ii Chloride And Sodium Phosphate Triba 2 (34.89 KiB) Viewed 10 times
- Today S Lab In This Activity You Will Be Given A Vial With A Mixture Of Copper Ii Chloride And Sodium Phosphate Triba 3 (43.25 KiB) Viewed 10 times
- Today S Lab In This Activity You Will Be Given A Vial With A Mixture Of Copper Ii Chloride And Sodium Phosphate Triba 4 (38.51 KiB) Viewed 10 times
- Today S Lab In This Activity You Will Be Given A Vial With A Mixture Of Copper Ii Chloride And Sodium Phosphate Triba 5 (33.33 KiB) Viewed 10 times
Day 1 1. Obtain between 0.8 g and 10 grams of one of the unknown samples. Record the sample ID number. Do not retum excess sample to the stock mixtures! 2. Transfer all of the solid mixture into a 50 mL beaker, 3. Place a magnetic stir bar in the beaker and add 30 mL of deionized water using a graduated cylinder. Place the beaker on a stir plate and stir gently for 10 a minutes. Remove the beaker from the stir plate. 4. Follow the diagram below to prepare a fluted filter paper fue gravity filtration, and then record the mass of the filter paper. a Crease paper sighty Foldin quarters Repeat folding in worth Foldin hal Open to for one Open to form Ruted one ) 18 MacBook Pro
5. Place the short-stem glass funnel over an empty 125 ml. Erlenmeyer flask and test the folded filter paper within the glass funnel. Dampen the filter paper with deionized water from a wash bottle 6. Hold a glass stir rod against the lip of the beaker to guide most of the liquid from the beaker containing your precipitate through the filter paper. a. Be careful not to let the funnel overflow Move ALL of the precipitate from the beaker into the funnel Make sure to remove the stir bar and rinse both the stir bar and the stir rod into the filter paper to ensure that the entire product is filtered 7. To limit the amount of impurities, wash the precipitme with all amounts of Dl water delivered from a squirt bottle. Allow the liquid to run through the filter before proceeding to the next step * Place the filter paper + precipitate on a watch glass and allow to air dry until next period. Ensure it is properly LABELED with your names. Follow your professor's instructions for storage Obtain 2 clean test tubes and tabel them "A" and "W" Tranfer small portion (-5-10 drops of the filtrate (leftover liquid from tiltration) imo both test tubes using a disposable pipette 10. Add a few drops of the 0.2M CuCly solution to "A" and add a few drops of the O2M Na PO, solution to "B." Use disposable pipettes for both of these additions 11. Record whether or not a precipitate forms in either of these test tubes. Note the color of the solution. Think about how this step helps in the identification of the 0 " MAS 18 )))
before proceeding to the next step 8. Place the filter paper precipitate on a watch glass and allow to air dry until next period. Ensure it is properly LABELED with your names. Follow your professor's instructions for storage. 9. Obtain 2 clean test tubes and label them "A" and "B." Transfer small portions (~5-10 drops) of the filtrate (leftover liquid from filtration) into both test tubes using a disposable pipette 10. Add a few drops of the 0.2M CuCl solution to "A" and add a few drops of the 0.2M Na3PO, solution to "B"Use disposable pipettes for both of these additions 11. Record whether or not a precipitate forms in either of these test tubes. Note the color of the solution. Think about how this step helps in the identification of the limiting reactant 12. Copper chloride is a tox chemical that must be disposed of in a hazardous waste container; however, sodium phosphate is relatively harmless and can simply be poured down the drain. BEFORE disposing of any chemicals, think about what is left in your flask and test tubes. Determine the most appropriate way to dispose of your liquid waste based on how you identified the excess reagent, Check with your professor before disposing of any chemical waste. Day 2 1. Weigh the filter paper + precipitate on a balance 2. Scrape the precipitate from the filter paper into the labeled beaker or wide mouth jar in the hood 3. Place used filter paper in basket in hood. 4. Throw weigh boat in trash can 1/1 points Day 1 . Data Enter your data Unknown mixture sample ID:
Q3 In the Limiting Reactant Activity, would it have been possible to tell which of the reactants was limiting without forming a precipitate from the filtrate? Why or why not? B I U S XX, EE E Subscript Your answer..... Answer not yet submitted. To submit, click Preview then Submit You may make updates to your submission until it is graded. Preview Submission 3/3 points Q4 Chlorine trifluoride is a highly reactive compound that is used in the purification of uranium for nuclear power plants (it can also burn through concrete). The circle below shows a mixture of chlorine gas (large green spheres) and fluorine gas (small yellow spheres), which react to form chlorine trifluoride MAY 18 ♫ A