The change in mass indicates the diffusion of water into the dialysis bag. An increased solute concentration of sucrose in the dialysis bag will give rise to a higher rate of diffusion of water into the bag which will give rise to a higher percent change in mass.
Why did you calculate the percent change in mass?
Why did you calculate the percent change in mass rather than simply using the change in mass? The differences in mass don’t deal with the proportional aspect of the solutions, making the real results less accurate. 18g(final mass) – 20g(initial mass)=-2/20g(initial mass) x 100, which gives you a 10% change of mass.
Why does the data show that the tube had lost mass after 24 hours?
Although the percent solute is equal in both, the water is still moving randomly in and out of the cell, and the mass of the cell ended up decreasing. A hypertonic solution happened in tube C, the tube lost mass.
What do you predict will happen to the concentration of free water molecules if you add salt to a solution?
Salt is a solute. When you add water to a solute, it diffuses, spreading out the concentration of salt, creating a solution. If the concentration of salt inside a cell is the same as the concentration of salt outside the cell, the water level will stay the same, creating an isotonic solution.
What does salt water do to a cell?
Fig. 1. When cells are exposed to high levels of salt (sodium chloride) they lose water by osmosis and shrink. The cytoplasm condenses and the movement of cellular components, such as the cytoskeleton and organelles, stops.
What causes the fluid movement to decrease with time?
What causes the fluid movement to decrease with time? A decrease in the concentration gradient.
Is Salt a solute?
In salt solution, salt is the solute. A solvent is the substance that does the dissolving – it dissolves the solute. In salt solution, water is the solvent. For each solute and solvent, there is a limit to the mass of solute that will dissolve in a particular volume of the solvent.
Is Vinegar a solute?
Vinegar is not a solute. A solute is a chemical that can dissolve in a solvent. Vinegar is a SOLVENT. Vinegar can dissolve other chemicals because it can behave as a solvent and dissolve certain other chemicals.
Is salt solution a hypertonic?
A hypertonic solution contains a high solute concentration with respect to cells. For example, a solution containing 10% salt is hypertonic. A solution containing 0.5% salt is hypotonic with respect to the cell. When a cell is placed in a hypotonic environment, there is a net movement of water into the cell.
What is an example of hypertonic solution?
Hypertonic solutions have a higher concentration of electrolytes than plasma. Common examples of hypertonic solutions are D5 in 0.9% normal saline and D5 in lactated ringers.
What is hypertonic example?
A hypertonic solution is one which has a higher solute concentration than another solution. An example of a hypertonic solution is the interior of a red blood cell compared with the solute concentration of fresh water.
Does hypertonic shrink or swell?
A hypotonic solution causes a cell to swell, whereas a hypertonic solution causes a cell to shrink.
How do you tell if a cell will shrink or swell?
If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. In an isotonic environment, there is no net water movement, so there is no change in the size of the cell. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.
Does hypertonic make things swell?
In a hypertonic solution, a cell with a cell wall will lose water too. If placed in a hypotonic solution, water molecules will enter the cell, causing it to swell and burst. Plant cells (bottom panel) become plasmolyzed in a hypertonic solution, but tend to do best in a hypotonic environment.
Will a cell swell in hypertonic solution?
A hypertonic solution has increased solute, and a net movement of water outside causing the cell to shrink. A hypotonic solution has decreased solute concentration, and a net movement of water inside the cell, causing swelling or breakage.
Do cells shrink in a hypertonic solution?
Hypertonic solutions have less water ( and more solute such as salt or sugar ) than a cell. If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ).
What are the 3 types of osmosis?
What are the three types of osmotic conditions that affect living cells? The three types of osmotic conditions include- hypertonic, isotonic, and hypotonic.
