How Does Sugar Concentration Affect The Rate Of Osmosis
Osmosis investigation
Aim: To investigate how sugar concentration affects the mass or size of a potato and find out the sugar solution.
Introduction: Osmosis is the movement of water molecules across a partially permeable membrane form a region of high water concentration to a region of low water concentration until the concentration on both sides is equal. This means that osmosis is like diffusion involving water molecules. Osmosis occurs across a partially permeable membrane, with holes only small enough for water molecules to pass through and not larger ones like glucose. An example of a partially permeable membrane is visking tubing. Osmosis happens so that the concentration outside the membrane is equal to the concentration inside …show more content…
It is evident form my graph that as sugar concentration increases the mass of the potatoes when reweighed decreases. This is shown where sugar concentration 0.5M has the lowest value on the graph, therefore highest percentage decrease. When the potato chips are put into distilled water the mass increases, this is shown by the highest value on the graph given by the distilled water solution. In distilled water the potato chips swell up because water enters their cells by osmosis. The distilled water has a high water concentration whereas the potato chips have a low water concentration because there are lots of other solute molecules like sugar due to starch content. This means to eliminate the concentration gradient the distilled water must pass through the semi-permeable membrane into the potato chip. Due to the uptake of water into the potato chips there is an increase in the mass of the potato chips, this can be seen This is what happened when we reweighed the potatoes. This is clearly shown on my graph as the potatoes placed in distilled water gave the highest positive percentage change in mass. When the potatoes are placed in rich sugar solution the potatoes will decrease in mass because water leaves their cells due to osmosis. This is because also happens in sugar solution 0.4M, 0.3M and 0.2M but to a less extent. In the 0.1M solution the potato chip increases in mass. The reason for this is that the concentration of sugar is high and the water in the potato has a low concentration. This means that the sugar solution passes into the potato cells making the potato increases in weight. The conclusion that I have come to is in support of my
Aim: To investigate how sugar concentration affects the mass or size of a potato and find out the sugar solution.
Introduction: Osmosis is the movement of water molecules across a partially permeable membrane form a region of high water concentration to a region of low water concentration until the concentration on both sides is equal. This means that osmosis is like diffusion involving water molecules. Osmosis occurs across a partially permeable membrane, with holes only small enough for water molecules to pass through and not larger ones like glucose. An example of a partially permeable membrane is visking tubing. Osmosis happens so that the concentration outside the membrane is equal to the concentration inside …show more content…
It is evident form my graph that as sugar concentration increases the mass of the potatoes when reweighed decreases. This is shown where sugar concentration 0.5M has the lowest value on the graph, therefore highest percentage decrease. When the potato chips are put into distilled water the mass increases, this is shown by the highest value on the graph given by the distilled water solution. In distilled water the potato chips swell up because water enters their cells by osmosis. The distilled water has a high water concentration whereas the potato chips have a low water concentration because there are lots of other solute molecules like sugar due to starch content. This means to eliminate the concentration gradient the distilled water must pass through the semi-permeable membrane into the potato chip. Due to the uptake of water into the potato chips there is an increase in the mass of the potato chips, this can be seen This is what happened when we reweighed the potatoes. This is clearly shown on my graph as the potatoes placed in distilled water gave the highest positive percentage change in mass. When the potatoes are placed in rich sugar solution the potatoes will decrease in mass because water leaves their cells due to osmosis. This is because also happens in sugar solution 0.4M, 0.3M and 0.2M but to a less extent. In the 0.1M solution the potato chip increases in mass. The reason for this is that the concentration of sugar is high and the water in the potato has a low concentration. This means that the sugar solution passes into the potato cells making the potato increases in weight. The conclusion that I have come to is in support of my