The formula to calculate the number of moles (n), concentration (C), or volume (V) is:
\[ n = C \cdot V \]
Where:
Let's say the concentration (\( C \)) is 2 M, and the volume (\( V \)) is 3 L. Using the formula:
\[ n = 2 \cdot 3 \]
We get:
\[ n = 2 \cdot 3 = 6 \text{ moles} \]
So, the number of moles (\( n \)) is 6 moles.
Concentration, often referred to as molarity, is a measure of the amount of a substance (solute) present in a given volume of solution. It is typically expressed in moles per liter (M). Concentration is a crucial concept in chemistry as it helps in understanding the strength and reactivity of solutions. Higher concentration means more solute particles are present in the solution, which can affect the rate of chemical reactions and the properties of the solution.
Definition: The number of moles in a solution can be calculated using its concentration and volume.
Formula: \( n = C \times V \)
Example: \( n = 0.5 , \text{mol/L} \times 2 , \text{L} \)
Definition: The number of moles is a measure of the amount of substance.
Formula: \( n = \frac{m}{M} \)
Example: \( n = \frac{10 , \text{g}}{2 , \text{g/mol}} \)
Definition: Concentration is the amount of a substance in a given volume.
Formula: \( C = \frac{n}{V} \)
Example: \( C = \frac{0.5 , \text{mol}}{1 , \text{L}} \)
Definition: This formula relates the number of moles to the concentration and volume of a solution.
Formula: \( n = C \times V \)
Example: \( n = 1 , \text{mol/L} \times 3 , \text{L} \)
Definition: This formula calculates the concentration of a solution given the number of moles and volume.
Formula: \( C = \frac{n}{V} \)
Example: \( C = \frac{2 , \text{mol}}{4 , \text{L}} \)
