i just had a lab on filtration. If possible can you please help me with this tab
ID: 900702 • Letter: I
Question
i just had a lab on filtration. If possible can you please help me with this table?
C. Filtration
Materials: Funnel, filter paper, 50-mL graduated cylinder, test tubes (3), test tube rack, test tube
holder, stirring rod, droppers, two 150-mL beakers, boiling water bath, powdered
charcoal, iodine reagent, 0.1 M AgN03, Benedict's solution
To the mixture of glucose, NaCl, and starch from part B, add a small amount of powdered charcoal.
Fold a piece of filter paper in half and in half again. Open the fold to give a cone-like shape and
place the filter paper cone in a funnel. Push it gently against the sides and moisten with water. Place
a small beaker under the fu nnel. Pour the mixture into the filter paper. Collect the liquid (filtrate)
that passes through the filter.
Figure 2 Filtering a mixture
C.1 Describe what you see in the filter paper.
C.2 Test the liquid in the beaker (filtrate) for chloride, starch, and glucose using the identification tests
from part A. Compare the results of each test to part A. Use the test results to identify the substances
that passed through the filter paper.
C.3 From the test results, determine what was trapped in the filter and what passed through. Identify the
substance that is a suspension.
C.1 Appearance of filter paper___________________________________________
Substance present ________________________________________________
C.3 Which substance is a suspension?_______________________________________
Which substances are solutions or colloids?______________________________________
C.2 TEST FOR RESULTS OF TEST SUBSTANCE PRESENT IN FILTRATE? CI- STARCH GLUCOSEExplanation / Answer
Active charcoal carbon filters are most effective at removing chlorine, sediment, volatile organic compounds (VOCs), taste and odor from water. They are not effective at removing minerals, salts, and dissolved inorganic compounds.
C.1 Appearance of filter paper: Black with white colored insoluble starch
Substance present : Cl- and insoluble starch
Generally, Benedict's test will detect the presence of aldehydes, and alpha-hydroxy-ketones, including those that occur in certain ketoses. A positive test with Benedict's reagent is shown by a colour change from clear blue to a brick-red precipitate.
C.3 Which substance is a suspension? Starch is a suspension.
Which substances are solutions or colloids? Glucose and NaCl are water soluble, which are in solutions.
C.2 TEST FOR RESULTS OF TEST SUBSTANCE PRESENT IN FILTRATE? CI- No AgCl Precipitate No Cl- ions STARCH No Starch-Iodine complex No starch GLUCOSE Positive Benedict's test It contains glucoseRelated Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.