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group of students are conducting an experiment. Since potatoes contain both sugar and water, the students use them in the experiment. The students cut six equal cubes of potato and weigh them. They place the six cubes into six different beakers containing different concentrations of sugar solutions, then weigh each potato cube after 24 hours and calculate the percent change in mass. The graph below shows the result of their experiment.
Which of the statements below is a valid conclusion about this experiment?

a
The higher the concentration of sugar, the more likely the water concentration will be at equilibrium.
b
The lower the concentration of sugar, the more likely the potato will gain mass.
c
The higher the concentration of sugar, the more likely the potato will gain mass.
d
The lower the concentration of sugar, the less likely the potato will gain mass.

group of students are conducting an experiment Since potatoes contain both sugar and water the students use them in the experiment The students cut six equal cu class=


Answer :

helenbeastie

Answer:

the answer is B.

based on the graph, the higher the sugar concentration in the glucose solution, the more the potato strip loses mass. this is due to the net movement of water molecules out of the potato strip into the glucose solution of lower water potential. as such, the potato strip loses more mass if placed in a glucose solution of higher sugar concentration.

B is just the reverse: the lower the sugar concentration of the glucose solution, the more mass would be gained by the potato strip (due to the net movement of water molecules INTO the potato strip this time round)

hope this clears up!

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