Problem: A beaker contains 100.0 mL of pure water. A second beaker contains 100.0 mL of seawater. The two beakers are left side by side on a lab bench for one week. At the end of the week, the liquid level in both beakers has decreased. However, the level has decreased more in one of the beakers than in the other.Which one level has decreased more?

FREE Expert Solution

We have to determine whether the level of pure water or sea water sample would decrease more if left in a beaker for one weak.


The molecules of liquid take up energy from their surrounding and evaporate. All liquids evaporate at varying rates.

The rate of evaporation of a liquid depends upon various factors such as the strength of intermolecular forces or the presence of impurities in the liquid.

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Problem Details

A beaker contains 100.0 mL of pure water. A second beaker contains 100.0 mL of seawater. The two beakers are left side by side on a lab bench for one week. At the end of the week, the liquid level in both beakers has decreased. However, the level has decreased more in one of the beakers than in the other.

Which one level has decreased more?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Colligative Properties concept. You can view video lessons to learn The Colligative Properties. Or if you need more The Colligative Properties practice, you can also practice The Colligative Properties practice problems.