Question

A strontium hydroxide solution is prepared by dissolving 10.50 g of Sr(OH)2 in water to make 65.00 mL of solution.What is the molarity of this solution? Express your answer to four significant figures and include the appropriate units.

Answer 1

Answer: The molarity of strontium hydroxide solution is 1.328 M

Explanation:

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

$\text{Molarity of the solution}=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (in L)}}$

Given mass of strontium hydroxide = 10.50 g

Molar mass of strontium hydroxide = 121.63 g/mol

Volume of solution = 65.00 mL

Putting values in above equation, we get:

$\text{Molarity of strontium hydroxide solution}=\frac{10.50\times 1000}{121.63\times 65.00}\\\\\text{Molarity of strontium hydroxide solution}=1.328mol/L$

Hence, the molarity of strontium hydroxide solution is 1.328 M