Question:
To a 4 litre of 0.2 M solution of NaOH, 2 litre of 0.5 M NaOH are added. The molarity of resulting solution is
To a 4 litre of 0.2 M solution of NaOH, 2 litre of 0.5 M NaOH are added. The molarity of resulting solution is
Updated On: Jun 23, 2023
- 0.9 M
- 0.3 M
- 1.8 M
- 0.18 M
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The Correct Option is B
Solution and Explanation
Total moles of NaOH
= $4 \times 0.2 + 2 \times 0.5$
= 0.8 $\times$ 1.0 = 1.8
Molarity =$\frac{1.8}{6}$ = 0.3 M
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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.