Aqueous Solutions and Concentrations

From the study guide

Course Outline

  1. Solution Composition and Notation
  2. Mass Concentration and Solubility
  3. Mass Concentration and Density
  4. Preparing Aqueous Solutions
  5. Concentration by Calibration

1. Solution Composition and Notation

Key Concepts & Definitions

  • Solution: A homogeneous mixture obtained by dissolving one or more solutes in a solvent.

β˜… Must-know

πŸ“Œ The solute is the dissolved chemical species and is often minor or unique, whereas the solvent is the chemical species that is major in the solution.

Further detail

  • A solution is aqueous when water is the solvent, and the dissolved species are then written with the state symbol (aq).

  • An aqueous potassium permanganate solution contains the aqueous species K+ (aq) and MnO4βˆ’ (aq).

Memory Hook

Solute is dissolved and usually minor; solvent is the major component.

2. Mass Concentration and Solubility

Key Concepts & Definitions

  • Mass concentration: The mass of solute dissolved per litre of solution.
  • Saturated solution: When the solute mass concentration is maximal and no more solute dissolves in the solvent.
  • Solubility: The maximum mass concentration of a solute in a solvent, denoted s.
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Practice quiz preview

1. Which description correctly defines a solution?

2. What does mass concentration measure?

3. A solution contains 6.0 g6.0\,\text{g} of dissolved solute in 0.50 L0.50\,\text{L} of solution. What is its mass concentration?

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Flashcard preview

What is a solution in chemistry?

A homogeneous mixture of solutes dissolved in a solvent.

What distinguishes a solute from a solvent in a solution?

The solute is the dissolved species and often minor, the solvent is the major species.

What is mass concentration in a solution?

Mass concentration is the mass of solute dissolved per litre of solution.

What formula relates mass concentration, solute mass, and solution volume?

Cm=mVC_m=\frac{m}{V} where mm is solute mass and VV is solution volume.

Solution Composition Notation

Solute: minor; solvent: major component.

Mass Concentration Formula

Cm=mVC_m = \frac{m}{V}, solute mass per litre.

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Frequently asked questions

What does the Aqueous Solutions and Concentrations study guide cover?

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How many questions are in the Aqueous Solutions and Concentrations quiz?

The practice quiz has 9 multiple-choice questions, each with an explanation. Use it to check what you know and find your gaps.

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