Question:

Chlorophyll extracted from the crushed green leaves was dissolved in water to make 2 L solution of Mg of concentration 48 ppm. The number of atoms of Mg in this solution is \(x × 10^{20}\) atoms. The value of \(x\) is ________. (Nearest integer)
(Given : Atomic mass of Mg is 24 g mol^–1; N_A = 6.02 × 10²³ mol^–1)

Updated On: Jan 4, 2025

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Correct Answer: 24

In 2L solution of Mg \(→\) 96 mg of Mg
Number of atoms of Mg = \(\frac {96×10^{−3}}{24}×N_A\)
\(=4×10^{−3}×6×10^{23}\)
\(=24×10^{20}\)
\(x=24\)

So, the answer is \(24\).

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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.

The solutions can be classified into three types:

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.