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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.
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Explain the concept of solubility and saturated solution.
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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.
