Athroat spray is 1.40% by mass phenol, c6h5oh in water. if the solution has a density of 0.9956 g/ml, calculate the molarity of the solution.

The molarity of solution is 1.08 M

Explanation:

We are given:

(m/m) of phenol = 1.40 %

This means that 1.40 g of phenol is present in 100 g of solution.

To calculate volume of solution, we use the equation:

Density of solution = 0.9956 g/mL

Mass of solution = 100 g

Putting values in above equation, we get:

To calculate the molarity of solution, we use the equation:

We are given:

Mass of solute (phenol) = 1.40 g

Molar mass of phenol = 94.11 g/mol

Volume of solution = 100.442 mL

Putting values in above equation, we get:

Hence, the molarity of solution is 0.15 M

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