Practice Solute in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

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Quick Recap

The substance that is dissolved in a solution, typically present in a smaller amount than the solvent.

The thing that 'disappears' when you dissolve it — like sugar dissolving in tea. The sugar is the solute.

Showing a random 20 of 50 problems.

Example 1

medium

You add

25\,\text{g}

\text{KNO}_3

100\,\text{g}

water; solubility at this temperature is

32\,\text{g}/100\,\text{g}

. Identify the solute and state whether the solute fully dissolves.

Example 2

medium

A laboratory bottle is labeled '

2.0\,\text{M}

NaOH(aq)'. What is the solute, and what does the label tell you about its concentration?

Example 3

medium

A nurse prepares a saline drip:

NaCl

dissolved in sterile water. Identify the solute and one reason its concentration matters.

Example 4

easy

Ethanol is mixed into water as a small additive. Which is the solute?

Example 5

medium

In a mixture of 90 g ethanol and 10 g water, which is the solute? Explain why state does not decide this.

Example 6

easy

In a saline solution (salt water), what is the solute?

Example 7

easy

In humid air, water vapor is dissolved in nitrogen/oxygen gas. What is the solute?

Example 8

easy

In a solution of sugar dissolved in water, identify the solute and explain its role.

Example 9

challenge

A drink is made by dissolving 12 g sugar and 3 g salt in 185 g water. Identify all solutes, the solvent, and the total solution mass.

Example 10

easy

Fill in the blank: The substance that dissolves in a solvent is the ____.

Example 11

hard

100\,\text{g}

saturated NaCl solution at

20°\text{C}

contains

26.5\%

NaCl. Find the mass of solute that crystallizes if the solution is evaporated until

40\,\text{g}

of water remains, with no more dissolving allowed.

Example 12

hard

15.0\,\text{g}

of glucose (

M = 180.0\,\text{g/mol}

) and

5.85\,\text{g}

NaCl (

M = 58.5\,\text{g/mol}

) are dissolved in

500\,\text{mL}

water. List the solutes and find each one's molar concentration.

Example 13

medium

Why can a gas like oxygen be called a solute when it is dissolved in lake water?

Example 14

easy

In iced tea sweetened with honey, what is the solute?

Example 15

hard

A vinegar bottle is

5\%

acetic acid by mass. A

250\,\text{g}

bottle holds how much solute (acetic acid)? In moles, how much? (

M = 60.05\,\text{g/mol}

)

Example 16

easy

A cup of tea contains tea leaves' extract, sugar, and a small amount of milk dissolved in water. Name three solutes.

Example 17

medium

In carbonated water,

\text{CO}_2

gas is dissolved in water. Identify the solute and solvent, and explain what happens when the bottle is opened.

Example 18

medium

Two solutions: (A) 1 spoon sugar in 1 cup water, (B) 3 spoons sugar in 1 cup water. Which has more solute, and what property differs?

Example 19

medium

Sea water averages about

3.5\%

NaCl by mass. In

1.0\,\text{kg}

of sea water, how much solute is present?

Example 20

hard

250\,\text{mL}

solution contains

0.50\,\text{M}

KCl. How many grams of solute were dissolved? (

M_{\text{KCl}} = 74.55\,\text{g/mol}

)

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Related Concepts

Homogeneous Mixture Solvent Concentration