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CBSE Class-12 Chemistry Solutions Quick Revision

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CBSE Class-12 Chemistry Solutions Quick Revision

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Questions and Answers

Define a binary solution and provide an example.

A binary solution is a solution consisting of two components, typically a solute and a solvent. An example of a binary solution is salt dissolved in water.

Explain the concept of concentration and provide an example of a concentration measurement.

Concentration refers to the amount of solute present in a given amount of solution. An example of a concentration measurement is mass by volume percentage, which is the mass of the solute dissolved in 100 mL of solution.

What is molality and how is it calculated?

Molality (m) is the number of moles of solute present in 1kg of solvent. It is calculated using the formula: Molality = Number of moles of solute / Mass of solvent in kilograms.

Differentiate between molarity and normality.

<p>Molarity (M) is the number of moles of solute present in 1L of solution, whereas normality is the number of gram equivalent of solute dissolved per litre of solution.</p> Signup and view all the answers

Explain the concept of solubility and saturated solution.

<p>Solubility refers to the maximum amount of solute that can be dissolved in a specified amount of solvent at a specified temperature. A saturated solution is a solution in which no more solute can be dissolved at the same temperature and pressure.</p> Signup and view all the answers

Study Notes

Solutions

A binary solution consists of two components: a solvent (the substance that does the dissolving) and a solute (the substance that is being dissolved)

Concentration

Concentration is the amount of solute present in a given amount of solution
Example: a 10% NaCl solution means that 10 grams of NaCl are dissolved in 100 grams of solution (not 100 mL of solution)

Molality

Molality (m) is the number of moles of solute per kilogram of solvent
Molality is calculated using the formula: m = moles of solute / mass of solvent (in kg)

Molarity vs Normality

Molarity (M) is the number of moles of solute per liter of solution
Normality (N) is the number of equivalents of solute per liter of solution
Key difference: molarity is based on moles, while normality is based on equivalents (which takes into account the reaction stoichiometry)

Solubility and Saturated Solutions

Solubility is the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature
A saturated solution is one that contains the maximum amount of dissolved solute at a given temperature, and any additional solute added will not dissolve

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Description

Test your knowledge on solutions and binary solutions with this quick revision quiz for CBSE Class-12 Chemistry students. Explore the concepts of solute, solvent, solid solution, and liquid solution.