Data Sheet: Activity – Osmosis Test Solution
Order ID 53563633773 Type Essay Writer Level Masters Style APA Sources/References 4 Perfect Number of Pages to Order 5-10 Pages Description/Paper Instructions
Data Sheet: Activity – Osmosis
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Activity Data Code ICV
Procedure I – Test Solution 1: Water
Complete the tables and questions below using your data and information found under the Background tab
Data Table I Note: Difference in Final Volumes = Final Volume of Test Sol – Final Volume of Water
Observations and Questions
[1] Describe the differences you observed in the water height (volume) when you conducted this experiment.
[2] Use information about osmosis and osmotic pressure from the Background section to explain what you observed during this procedure. In your explanation, use the following terms in appropriate contexts: Solute, solvent, solution, osmosis, and osmotic pressure.
[3] Given that the final heights (and volumes) are the same for the water and test solution, what can you conclude about the number of solutes in these two solutions? Explain your reasoning.
[4] As discussed in the Background material, water is an important molecule in nutrition. Do you expect water to continue to flow across the semipermeable, lipid bilayer after osmotic equilibrium is reached? Why or why not?
Procedure II – Test Solution 2: Sodium ion solution
Complete the tables and questions below using your data and information found under the Background tab
Data Table II Note: Difference in Final Volumes = Final Volume of Test Sol – Final Volume of Water
Observations and Questions
[5] Describe the differences you observed in the water height (volume) when you conducted this experiment.
[6] Use information about osmosis and osmotic pressure from the Background section to explain the change in the height (and volume) of the test solution. What is the basis for the increase in the volume in the test solution?
[7] Show your calculation for the difference in the final volumes for the two trials in Table II. Place your answers in the rightmost column Differences in Final Volumes (L).
[8] Why is the difference in final volumes the same (or very close to the same) for both trials in Table II? In your answer, use the following terms in the appropriate contexts: Solute, solvent, solution, and osmosis.
[9] Imagine that you start an experiment for Test Solution 2 where the starting volume for the Test Solution and the starting volume for water are the same. What do you think would happen if both starting volumes were the same? State a hypothesis of your prediction. In your hypothesis statement, be sure to identify the independent and dependent variables.
[10] Test your hypothesis from question [9] by doing a data run, where both solutions start at the same volume. Describe the results. Do the results support your hypothesis statement in Question [9]? Explain your answer and refer to the independent and dependent variables.
Procedure III – Test Solution 3: Potassium ion solution
Complete the table and questions below using your data and information found under the Background tab (see the Summary of Needed Formulas section) and Activity Form tab
Data Table III Note: Difference in Final Volumes = Final Volume of Test Sol – Final Volume of Water
Observations and Questions
[11] Describe the differences you observed in the water height (volume) when you conducted this experiment.
[12] Compare and contrast the differences in the height (volume) of water you observed and measured for Procedures I, II, and III.
[13] Based on your data for Tables I, II, and III, which solution has the highest concentration? Explain your answer. Cite your data values as part of your explanation.
[14] Consider the example of eating salty popcorn and use what you learned about body fluid compartments in the Background section. Which solutionTest or Waterbest represents the change in the electrolyte (solute) composition of the extracellular (outside of a cell) compartment in the body when a person eats salty popcorn? Explain your reasoning.
[15] Concentration Calculation: Using your Trial 1 difference in final volumes data from procedure II and procedure III, and the known concentration of sodium ion solution (see Activity Form tab), calculate the concentration of the potassium ion solution.
(a) First, determine the volume ratio
Potassium Difference = Difference in Final Volumes for Procedure III =
Sodium Difference = Difference in Final Volumes for Procedure II =
Volume Ratio = Potassium Difference / Sodium Difference =
Enter these values into the table below.
Data Table IV Volume Ratio
(b) Next, determine the concentration of potassium ion solution
Concentration of Sodium Ion Solution (see Activity Form tab) =
Concentration of Potassium Ion Solution = Concentration of Sodium Ion Solution × Volume Ratio
Enter these values into the table below.
Data Table V Ion Concentration
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