Question:
A solution is obtained by mixing $200\, g$ of $30\%$ and $300\, g$ of $20\%$ solution by weight. What is the percentage of solute in the final solution?
A solution is obtained by mixing $200\, g$ of $30\%$ and $300\, g$ of $20\%$ solution by weight. What is the percentage of solute in the final solution?
Updated On: Jun 23, 2023
- $50\%$
- $28\%$
- $64\%$
- $24\%$
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The Correct Option is D
Solution and Explanation
Solute in $200\, g$ of $30\%$ solution $= 60\, g$
Solute in $300 \,g$ of $20\%$ solution $= 60\, g$
Total grams of solute $= 120 \,g$
Total grams of solution $= 200 + 300 = 500 \,g$
$\%$ of solute in the final solution $= \frac{120}{500}\times100 = 24\%$
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Concepts Used:
Solutions
A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.
For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.
Types of Solutions:
The solutions can be classified into three types:
- Solid Solutions - In these solutions, the solvent is in a Solid-state.
- Liquid Solutions- In these solutions, the solvent is in a Liquid state.
- Gaseous Solutions - In these solutions, the solvent is in a Gaseous state.
On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types:
- Unsaturated Solution- A solution in which more solute can be dissolved without raising the temperature of the solution is known as an unsaturated solution.
- Saturated Solution- A solution in which no solute can be dissolved after reaching a certain amount of temperature is known as an unsaturated saturated solution.
- Supersaturated Solution- A solution that contains more solute than the maximum amount at a certain temperature is known as a supersaturated solution.