I need help with number 3 and 6. Consider the following sample results using the

Question

I need help with number 3 and 6. Consider the following sample results using the information provided: Kathy, a biology student performing the Osmosis Lab, has the indicated sucrose solutions into dialysis tubing and ti and blots each bag and determines the initial mass of performing the Osmosis Lab, has just finished placing approximately 15-25 ml.of ed off the ends so that they won't leak. She rinses each as so: The initial mass of the distilled water is 26.0g The initial mass of the 0.2 M sucrose is 26.2g The initial mass of the 0.4 M sucrose is 26.1g: The initial mass of the 0.6 M sucrose is 26.4g: The initial mass of the 0.8 M sucrose is 26.3g The initial mass of the 1.0 M sucrose is 26.4g Kathy submerges each bag with distilled water for 30 minutes. At the end of 30 minutes, Kathy blots cach bag and determines the final mass of each bag as so. The final mass of the distilled water is 25.9g: The final mass of the 0.2 M sucrose is 26.8g: The final mass of the 0.4 M sucrose is 27.5g: The final mass of the 0.6 M sucrose is 28.8g The final mass of the 0.8 M sucrose is 33.2g: The final mass of the 1.0 M sucrose is 34.9g: Place the above masses in the table below. Determine the Mass Difference and the Percent Change by using the following information: Mass Difference = the Final Mass-the Initial Mass Percent Change in MassFinal Mass- Initial Mass Place all of the information in the table. Show all of veur caleulations on a separate sheet of paper Mass X 100 Initial Mass Initial Mass Final Mass Percent Change in Mass Contents in Dialysis Bag Ditference Percent a) 0.0 M Distilled Water 20,0 b) 0.2 M Sucrose c) 0.4 M Sucrose d) 0.6 M Sucrose e) 0.8 M Sucrose 25. 2 2. 26127. f) 1.0 M Sucrose

Explanation / Answer

3)

If all the bags are placed in a 0.8 M sucrose solution instead of distilled water, then the mass of 0.2, 0.4, 0.6 M bags would be decreased due to hypertonic effect. This is because the solute concertation is more in outside than the bag. So, the water inside the bag moves toward the outer solution.    

The mass of 0.8 M bag remains constant, which is because both bag and outer solution has same concentration. So, movement of solute does not take place and it is called isotonic condition.   

The mass of 1.0 M bag increases, which is due to hypnotic effect. The water moves from outer solution to inside the bag.

6)

If the sucrose solution in the beaker would have been Hypotonic to the distilled water in the bag.

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