Question

Концентрированные растворы:

Answer 1

Надеюсь понятно нашла что смогла

Answer 2

Concentrated Solutions:

Concentrated solutions refer to solutions that have a high amount of solute dissolved in a given amount of solvent. These solutions are characterized by a high concentration of the solute.

Concentrated solutions can be prepared by adding a large amount of solute to a smaller amount of solvent. The concentration of the solution is usually expressed in terms of the amount of solute per unit volume or mass of the solvent.

Concentration Units: There are various units used to express the concentration of a solution. Some common concentration units include:

1. Molarity (M): Molarity is defined as the number of moles of solute per liter of solution. It is represented by the symbol M. For example, a 1 M solution of sodium chloride (NaCl) contains 1 mole of NaCl dissolved in 1 liter of solution.

2. Mass Percent (% m/m): Mass percent is defined as the mass of solute divided by the mass of the solution, multiplied by 100%. It is represented by the symbol % m/m. For example, a 10% m/m solution of glucose contains 10 grams of glucose dissolved in 100 grams of solution.

3. Volume Percent (% v/v): Volume percent is defined as the volume of solute divided by the volume of the solution, multiplied by 100%. It is represented by the symbol % v/v. For example, a 5% v/v solution of ethanol contains 5 milliliters of ethanol dissolved in 100 milliliters of solution.

4. Molality (m): Molality is defined as the number of moles of solute per kilogram of solvent. It is represented by the symbol m. For example, a 2 m solution of sulfuric acid (H2SO4) contains 2 moles of H2SO4 dissolved in 1 kilogram of solvent.

Properties of Concentrated Solutions: Concentrated solutions often exhibit certain properties that distinguish them from dilute solutions. Some of these properties include:

1. Higher Density: Concentrated solutions generally have a higher density compared to dilute solutions. This is because the presence of a larger amount of solute increases the mass of the solution without significantly increasing its volume.

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