The purpose of this assignment is to familiarize you with osmotic pressure and t
ID: 150952 • Letter: T
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The purpose of this assignment is to familiarize you with osmotic pressure and the factors that affect it. In lecture, we learned that the presence of solutes in water generates an osmotic force that has the ability to “pull” water through a cell membrane, from an area of low solute concentration to an area of high solute concentration. Osmotic pressure is a colligative property of solutions. You may want to look up the meaning of colligative property in order to better understand and answer the following questions. Let’s look at an application of osmotic pressure: In an attempt to mimic hypothetical cells, a scientist created 2 identical spheres whose outer membrane was made of a phospholipid bilayer only. The scientist then proceeded to fill those spheres with an equal volume of 1 millimolar solution of potassium (K+) (cell 1), and 1 millimolar solution of NaCl (cell 2). A millimolar concentration is equal to 1 millimole of solute per liter of solution. Hence, in this experiment, both spheres contain the same number of K+ and NaCl molecules. The scientist then placed both spheres in a beaker of deionized water for an hour. At the end of the hour, the scientist observed that the cell that contained potassium had increased in size by about 10%, while the cell that contains NaCl had increased in size by about 20%. Considering the fact that both cells contained the same concentrations of salts, and that they were placed in identical environments, how can we explain the difference in volume increase? (3 points) The purpose of this assignment is to familiarize you with osmotic pressure and the factors that affect it. In lecture, we learned that the presence of solutes in water generates an osmotic force that has the ability to “pull” water through a cell membrane, from an area of low solute concentration to an area of high solute concentration. Osmotic pressure is a colligative property of solutions. You may want to look up the meaning of colligative property in order to better understand and answer the following questions. Let’s look at an application of osmotic pressure: In an attempt to mimic hypothetical cells, a scientist created 2 identical spheres whose outer membrane was made of a phospholipid bilayer only. The scientist then proceeded to fill those spheres with an equal volume of 1 millimolar solution of potassium (K+) (cell 1), and 1 millimolar solution of NaCl (cell 2). A millimolar concentration is equal to 1 millimole of solute per liter of solution. Hence, in this experiment, both spheres contain the same number of K+ and NaCl molecules. The scientist then placed both spheres in a beaker of deionized water for an hour. At the end of the hour, the scientist observed that the cell that contained potassium had increased in size by about 10%, while the cell that contains NaCl had increased in size by about 20%. Considering the fact that both cells contained the same concentrations of salts, and that they were placed in identical environments, how can we explain the difference in volume increase? (3 points) The purpose of this assignment is to familiarize you with osmotic pressure and the factors that affect it. In lecture, we learned that the presence of solutes in water generates an osmotic force that has the ability to “pull” water through a cell membrane, from an area of low solute concentration to an area of high solute concentration. Osmotic pressure is a colligative property of solutions. You may want to look up the meaning of colligative property in order to better understand and answer the following questions. Let’s look at an application of osmotic pressure: In an attempt to mimic hypothetical cells, a scientist created 2 identical spheres whose outer membrane was made of a phospholipid bilayer only. The scientist then proceeded to fill those spheres with an equal volume of 1 millimolar solution of potassium (K+) (cell 1), and 1 millimolar solution of NaCl (cell 2). A millimolar concentration is equal to 1 millimole of solute per liter of solution. Hence, in this experiment, both spheres contain the same number of K+ and NaCl molecules. The scientist then placed both spheres in a beaker of deionized water for an hour. At the end of the hour, the scientist observed that the cell that contained potassium had increased in size by about 10%, while the cell that contains NaCl had increased in size by about 20%. Considering the fact that both cells contained the same concentrations of salts, and that they were placed in identical environments, how can we explain the difference in volume increase? (3 points) The purpose of this assignment is to familiarize you with osmotic pressure and the factors that affect it. In lecture, we learned that the presence of solutes in water generates an osmotic force that has the ability to “pull” water through a cell membrane, from an area of low solute concentration to an area of high solute concentration. Osmotic pressure is a colligative property of solutions. You may want to look up the meaning of colligative property in order to better understand and answer the following questions. Let’s look at an application of osmotic pressure: In an attempt to mimic hypothetical cells, a scientist created 2 identical spheres whose outer membrane was made of a phospholipid bilayer only. The scientist then proceeded to fill those spheres with an equal volume of 1 millimolar solution of potassium (K+) (cell 1), and 1 millimolar solution of NaCl (cell 2). A millimolar concentration is equal to 1 millimole of solute per liter of solution. Hence, in this experiment, both spheres contain the same number of K+ and NaCl molecules. The scientist then placed both spheres in a beaker of deionized water for an hour. At the end of the hour, the scientist observed that the cell that contained potassium had increased in size by about 10%, while the cell that contains NaCl had increased in size by about 20%. Considering the fact that both cells contained the same concentrations of salts, and that they were placed in identical environments, how can we explain the difference in volume increase? (3 points) The purpose of this assignment is to familiarize you with osmotic pressure and the factors that affect it. In lecture, we learned that the presence of solutes in water generates an osmotic force that has the ability to “pull” water through a cell membrane, from an area of low solute concentration to an area of high solute concentration. Osmotic pressure is a colligative property of solutions. You may want to look up the meaning of colligative property in order to better understand and answer the following questions. Let’s look at an application of osmotic pressure: In an attempt to mimic hypothetical cells, a scientist created 2 identical spheres whose outer membrane was made of a phospholipid bilayer only. The scientist then proceeded to fill those spheres with an equal volume of 1 millimolar solution of potassium (K+) (cell 1), and 1 millimolar solution of NaCl (cell 2). A millimolar concentration is equal to 1 millimole of solute per liter of solution. Hence, in this experiment, both spheres contain the same number of K+ and NaCl molecules. The scientist then placed both spheres in a beaker of deionized water for an hour. At the end of the hour, the scientist observed that the cell that contained potassium had increased in size by about 10%, while the cell that contains NaCl had increased in size by about 20%. Considering the fact that both cells contained the same concentrations of salts, and that they were placed in identical environments, how can we explain the difference in volume increase? (3 points)Explanation / Answer
The osmosis is the process where solvent molecule which is mainly water moves from high concentration to low concentration. When solute has been added in the water, it's water potential decreases.In osmosis, movement of solvent molecules takes place from the region of high water potential to low water potential.
The sphere contain only potassium ion whereas the other sphere have two electrolytes sodium and chlorine. When NaCl dissolved in water it break into sodium and chloride. Hence, it becomes two ions sodium and calcium.
Since, the sphere having NaCl contains two solutes, we here's sphere having K+ have one solute, the swelling in Nacl containing sphere is double that of K+ because it depends on the number of solute particles not the size of solute particles.
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