Here's how to calculate the molarity of pure liquid benzene:

Understanding Molarity

Molarity (M) is defined as the number of moles of solute per liter of solution.

Applying it to Pure Benzene

* Solute: In this case, the solute is benzene itself.

* Solution: The solution is also pure benzene.

Calculations

1. Density of Benzene: The density of benzene is approximately 0.879 g/mL.

2. Molar Mass of Benzene: The molar mass of benzene (C₆H₆) is approximately 78.11 g/mol.

3. Convert Density to g/L: 0.879 g/mL * 1000 mL/L = 879 g/L

4. Calculate Molarity:

* Divide the density in g/L by the molar mass: 879 g/L / 78.11 g/mol = 11.26 mol/L

Therefore, the molarity of pure liquid benzene is approximately 11.26 M.