Introduction
Osmosis is the passage of peeing from a kingdom of higher water system potential to a region of cast down water potential through a partially porous membrane. Osmosis only involves the movement of water molecules.
The diagram depicts water molecules fan out from the left hand side which has the higher water potential, to the rightfield hand side which has the baseer water potential. Only the water molecules can pass across the partially permeable membrane
bit 1
Aim
The aim of this investigation is to record the effect of varying dilutions of atomic number 11 chloride resolvent on sections of potatoes and ascertaining the amount of osmotic activity amid the two.
The independent variable is varying the range of concentrations by diluting the 1M solution of sodium chloride. The dependant variable is measuring the mass of the potato.
The variables that were unplowed constant were to use the same potato, cutting identical pitch and length of potato sections and use the same electronic scales.
Prediction
It was predicted that when change magnitude the concentration of sodium chloride, the mass of the potato should decrease. This is because the potato has a higher water potential than the solution.
Water molecules move from a region of high concentration to low concentration, therefore the water moves out of the potato cubicles and consequently it will decrease in mass. In 0 molar or very low common salt concentrations then the opposite should happen. The solution has higher water potential compared with the potato, therefore the water will move into the potato cells, increasing its mass.
Water molecules will continue to diffuse into the salt solution until it reaches equal concentrations on either side of the membrane, attain a state of equilibrium. This solution is called isotonic (figure 2). A cell placed in an isotonic solution will incomplete gain nor lose water. This should be seen in the...If you want to confirm a full essay, order it on our website: Orderessay
If you want to get a full essay, wisit our page: write my essay .
No comments:
Post a Comment