Question:
How many grams of $NaOH$ are present in $250\, mL$ of $0.5 \,M\, NaOH$ solution?
How many grams of $NaOH$ are present in $250\, mL$ of $0.5 \,M\, NaOH$ solution?
Updated On: Jun 23, 2023
- $7.32 \,g$
- $3.8 \,g$
- $5 \,g$
- $0.5 \,g$
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The Correct Option is C
Solution and Explanation
No. of moles of $NaOH$
$= \frac{M \times V}{1000} = \frac{0.5 \times 250}{1000} = 0.125$
Mass of $NaOH = 40 \times 0.125 = 5 \,g$
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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.