Answer to Question #201361 in Chemistry for Lucas

Question

96.3 g of potassium iodate (KIO₃) is used to prepare 300.0 mL of solution. What is the molar concentration of the solution?

Answer 1

Solution:

The molar mass of KIO₃ is 214 g/mol.

Therefore,

(96.3 g KIO₃) × (1 mol KIO₃ / 214 g KIO₃) = 0.45 mol KIO₃

Molarity is defined as number of moles of solute dissolved in 1 L of solution.

Therefore,

Molarity = (0.45 mol / 0.3 L) = 1.5 mol/L

Molarity = 1.5 mol/L

Answer: The molar concentration of the solution is 1.5 mol/L