Question

Question

In an experiment, a scientist adds an unknown powder to 1 liter of water until no more powder will dissolve. The scientist repeats this procedure for solutions at several temperatures. This data table shows the results.

Which property of the powder is identified by the data?









Question
In an experiment, a scientist adds an unknown powder to 1 liter of water until no more powder will dissolve. The scientist repeats this procedure for solutions at several temperatures. This data table shows the results.

Which property of the powder is identified by the data?

Answer 1

The property of the powder shown by the data is that its solubility in water increases with temperature.

What does the image show about solubility?

Solubility is a measure of how much of a substance can dissolve in a given amount of solvent usually expressed in grams of solute per 100 milliliters of solvent.

In this experiment, as the temperature of the water increases from 20°C to 50°C, the mass of the powder that can dissolve in 1 liter of water also increases. At 20°C, only 5.0 grams of the powder can dissolve in 1 liter of water and at 50°C, the solubility increases to 14.5 grams.

This trend means the solubility of the powder in water is temperature-dependent and as the temperature of the water rises, more of the powder can dissolve in it. Therefore, the main property demonstrated by the data is that the solubility of the powder in water increases with temperature.

Therefore, the Option A is correct.

Note:

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