1.3 Transport in cells

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Question 1
Hard

A student investigated the effect of concentration of sodium chloride solution on the mass of butternut squash cylinders.

Figure 1 shows the results.

Figure 1: Mean percentage change in mass of butternut squash cylinders in different concentrations of sodium chloride solution.

a.

Plan a method that could be used to obtain the results in Figure 1.

[6]
b.

Explain the result for the butternut squash cylinders in the 0.6 mol dm−30.6 \text{ mol dm}^{-3}0.6 mol dm−3 sodium chloride solution.

[3]
c.

Explain why the percentage loss in mass at 0.6 mol dm−30.6 \text{ mol dm}^{-3}0.6 mol dm−3 was greater than the percentage loss in mass at 0.4 mol dm−30.4 \text{ mol dm}^{-3}0.4 mol dm−3.

[2]

1.3 Transport in cells Questions

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