ipl-logo

Molarity Of Potato Osmosis

693 Words3 Pages

CONCLUSION

As can be seen from the graph above, the mass percentage difference decreases as molarity increases. In other words, the molarity and the mass percentage difference are inversely proportional. According to figure 2, the mass of the trial 1 potato which will be submerged in the sugar solution with a molarity of 0.0, is 0.49 grams. The same potato piece after being soaked for 24 hours in the sugar solution of molarity 0.0, is 0.69 grams. The mass of this particular potato piece has increased by 0.2 grams or 40.82%. This sugar solution had the highest water concentration and water potential because it was simply distilled water. Water potential is defined as free water molecules in a solution. In this cases all the water molecules …show more content…

Although the percentage difference has decreased to 10.42%, the difference is still positive as osmosis is still occurring. However, this time there isn’t a great difference between the water potential of the potato and the water potential of the solution. As a result the net movement of water molecules by osmosis is less, than that in the molarity of …show more content…

For example, the potato pieces were measured and cut using a standard ruler. As a result the length of the potato pieces were inaccurate by 0.1-0.2 cm. This could have caused misinterpretations and inconsistency in the data. Another limitation while conducting this experiment was that our working station and storage stations were different. As a result, once we finished working, we had to move the beakers containing the sugar solution and potato pieces to a secluded and secure location to avoid disturbance. However, this movement caused some of the potato pieces to move. This led to confusion, as we had laid on the potato pieces in a formation so that we would remember the mass of each. The movement caused some pieces to be misplaced, resulting in confusion and improvisation. These errors could possibly make the experiment unreliable, and the conclusion

Show More
Related
631 Words | 3 Pages

In this lab there were five different stations. For the first station we had to determine an unknown mass and the percent difference. To find the unknown mass we set up the equation Fleft*dleft = Fright*dright. We then substituted in the values (26.05 N * 41cm = 34cm * x N) and solved for Fright to get (320.5g). To determine the percent difference we used the formula Abs[((Value 1 - Value 2) / average of 1 & 2) * 100], substituted the values (Abs[((320.5 - 315.8) /

Read More
1485 Words | 6 Pages

The isotonic point is the point in which osmosis causes the concentrations of either side of the cell wall to reach an equilibrium (balance). The original experiment involved placing gummy bears in water and sugar and salt solutions (Gummy bear osmosis, 2022). The experiment was modified to further investigate the effect of varying NaCl concentrations on the mass of potatoes.

Read More
775 Words | 4 Pages

In the first part of the experiment, Part A, the standard solutions were prepared. As a whole, the experiment was conducted by four people, however, for Part A, the group was split in two to prepare the two different solutions. Calibrations curves were created for the standard solutions of both Red 40 and Blue 1. Each solution was treated with a serial 2-fold dilution to gain different concentrations of each solution.

Read More
1127 Words | 5 Pages

Additionally, it was difficult obtaining a piece of rhubarb that was thin and particularly red, therefore the effect could not be best observed in the cells. Part B: Design your own experiment Parts of this practical were taken and slightly altered from the following link http://www.markedbyteachers.com/gcse/science/investigate-the-effect-of-surface-area-on-osmosis-in-potato-tissue.html Aim: To observe the effect different surface area: volume ratios have on osmosis in potato tissue. Hypothesis: If the potato has a larger surface area: volume ratio, the quicker osmosis will take place and the larger the mass will be at the end of the experiment, therefore the difference in mass of the potatoes from the start of the experiment to the end of the experiment will be larger. Additionally, the potato pieces left in a saltwater solution will decrease in mass, whereas the pieces left in water will increase in mass.

Read More
759 Words | 4 Pages

A larger sample size could have enabled averages to be resulted, and the experiment could have had several trials until concordant results are attained to increase the reliability. To enhance the accuracy of the results, a machine such as a cheese wire to cut straight along the edge could have been employed that would more accurately cut the cubes and hence reducing human error. This would be efficient as there is a large chance of human error when cutting the cubes by hand as the agar is slippery. Cubes with different sizes could be observed to improve the validity of the experiment. The weight of the bottom of the cubes pushing against the beaker likely caused an error to occur.

Read More
538 Words | 3 Pages

Between days one and two the difference in mass of the gummy bear was increased by 5.9 grams, having about a 169% increase in mass. (#2) Similarly, the volume of the gummy bear increased by 7.374 cm3 having a 246% increase after soaking in the

Read More
1515 Words | 7 Pages

The constant movement of solutes and water across cellular membranes is an overarching concept that helps to maintain cells’ growth and dynamic homeostasis. Water potential, the measure of the relative tendency of water to move from one area to another, takes into consideration the concentration of free water molecules. It is calculated using the following formula: water potential (Ψ) = pressure potential (Ψp) + solute potential (Ψs). The water in an organism moves down a concentration gradient, from an area of high water potential to low potential.

Read More
685 Words | 3 Pages

This also shows how much water was transferred from the egg to the sugar solution. The higher the percentage of corn syrup was, the faster the rate of osmosis was. As a result, the egg placed in 75% corn syrup, 25% filtered water had the lightest weight (0.5 oz), while the egg placed in 25% corn syrup, 75% filtered water weighed 2 oz. Overall, the importance of this lab was to understand the process of osmosis and how it differs depending on the type of

Read More
1274 Words | 6 Pages

We zeroed out the scale and weighed all four potato cores at once and recorded the mass. We then put those potato cores into the beaker of 75 mL of solution. With the potato cores in the beaker we then put a watch glass over the top of the beaker to minimize the amount of solution that evaporates. We let the potato cores sit in the solution overnight. The next day we then emptied the beaker of the solution by carefully draining the solution, while not letting the potato cores fall out.

Read More
2045 Words | 9 Pages

All the experiment was depending on fortune and luck and can not be successful at all because the performers do not have proper direction to perform the experiment. For the experiment, workers should have proper equipment, standardise and should have power to do work their own way. It is also concluded that the quality of production might be great in future by use the present statics and create a quality control chart and solve the problem in specific problems which effects the project. The common wisdom is that if only people did not make so many mistakes, there would not be so many problems. But even with the variation contributed by the people reduced to zero, there are still too many red

Read More
819 Words | 4 Pages

Diffusion and Osmosis Lab Report  By:  Jettica Williams  BIOL 1107 Lab  September 21, 2016  Prepared for Mrs. Fulford Lab Course  Page Break       The cell membrane act as a roadblock for cells.   The cell membrane has a very hectic job.   It restricts the access to what comes in and what goes out.   The bond the membrane shares with others is the idea of accountability.

Read More
1159 Words | 5 Pages

For this lab I will be using water and sucrose to demonstrate the rate of osmosis. In this lab I will be exploring how temperature impacts the rate of osmosis by placing pieces of potato of equal size in solutions of different temperatures and observing the change in mass of potato after a given period of time. The change in mass will indicate the rate of osmosis.

Read More
1598 Words | 7 Pages

By using the same mass of potato slices and putting them in different concentration of solutions for a specific amount of time will tell us how the concentration changes the mass of the potato slice. Therefore changing the rate of osmosis. Hypothesis: I predict that, if the piece of potato was put into a solution that has a high concretion of sucrose then the potato slice would lose mass as it would lose water from its cells because the water is moving out of the cell from a high concentration to a low concentration of water through a semi- permeable membrane. The cell is hypotonic and the solution is hypertonic.

Read More
1078 Words | 5 Pages

Biology Design Practical Joshua Edwards What are effects of the volume of a potato and the amount of weight it loses when placed in salt solution? Introduction This design practical uses a potato’s surface area to volume ratio to see what affects it has on osmosis in different concentrations. Osmosis is the movement of water molecules through a cell membrane into an area of a higher solute concentration. The movement goes the way of the solvent with more solute because the lower solute concentration is drifting through balancing the ratio of solute per solvent (En.wikipedia.org, 2018).

Read More
938 Words | 4 Pages

Record the readings for the time taken, for the particular height (the paper cup was dropped from). Repeat this process (using the same equipment), by varying the height of paper cup from the ground (with a specific difference in height, in each experiment). The independent variable, which is the height the empty muffin paper cup is dropped from, will start at 1 metre and the increase in height will be 0.5 m in each experiment. The use of the clamp stand is effective in this experiment because it will always control or keep constant, the height in which the paper cup is dropped from, unlike somebody dropping the paper cup using his/her hands.

Read More

More about Molarity Of Potato Osmosis

Related Topics

Open Document