FILTRATION/DIFFUSION LAB MANUAL QUESTIONS

IN LAB YOU TESTED THE RATE OF DIFFUSION OF POTASSIUM PERMANGANATE AND METHYLENE BLUE THROUGH AGAR. WHICH DYE MIGRATED AT A SLOWER RATE? WHY?

methylene blue; larger mw

IN LAB YOU OBSERVED THE PROCESS OF FILTRATION OF A SOLUTION CONTAINING STARCH, COPPER SULFATE AND CHARCOAL. ____________________ DID NOT PASS THROUGH THE FILTER PAPER. WHY?

charcoal, starch, particles too large

THE RATE OF DIFFUSION OF POTASSIUM PERMANGANATE AND METHYLENE BLUE THROUGH AGAR IS DIFFERENT, WHY?

different mw

IN LAB YOU OBSERVED THE PROCESS OF FILTRATION OF A SOLUTION CONTAINING STARCH, COPPER SULFATE AND CHARCOAL. NOT ALL OF THE SUBSTANCES PASSED THROUGH THE FILTER PAPER. WHICH DID NOT PASS THROUGH? WHY?

Starch and charcoal; too large

HOW WAS THE PRESENCE OF CHARCOAL ON THE FILTRATION MEMBRANE VERIFIED

Black residue left on the paper

HOW WAS THE PRESENCE OF COPPER SULFATE IN THE FILTRATION BEAKER VERIFIED

Blue color in the filtrate

WHAT WAS USED TO TEST FOR THE PRESENCE OF STARCH ON THE FILTRATION PAPER

Iodine

WHAT COLOR WAS SEEN WHEN THE IODINE WAS PLACED ON THE FILTRATION PAPER

purple/black

WHAT COLOR WAS SEEN WHEN THE IODINE WAS PLACED IN THE FILTRATION BEAKER?

yellow/brown

DOES POTASSIUM PERMANGANATE DIFFUSE FASTER THROUGH LIQUID (WATER) OR SOLID (AGAR)?

liquid

__________ IS USED TO APPROXIMATE A SEMI-PERMEABLE MEMBRANE WHEN USING BLUE DEXTRAN/ METHYLENE BLUE

dialysis tubing

__________ IS A PASSIVE PROCESS BY WHICH WATER AND SOLUTES ARE FORCED THROUGH A MEMBRANE BY HYDROSTATIC (FLUID) PRESSURE

filtration

WHAT WAS USED AS A SEMI-PERMEABLE MEMBRANE DURING THE FILTRATION EXERCISE?

filter paper

THE RATE OF DIFFUSION IS GREATER IN WHICH MEDIA: LIQUID OR SOLID?

liquid