Question

Calculate the volume of a 0.750 M solution containing 67.0 g of KNO3

(gives you 20 points!)

Answer 1

Volume of solution is 0.88 L.

Step-by-step explanation:

Given data:

Molarity of solution = 0.750 M

Mass of KNO₃ = 67.0 g

Volume of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Now we will calculate the number of moles.

Number of moles = mass/molar mass

Number of moles = 67.0 g/ 101.1 g/mol

Number of moles = 0.66 mol

Now we will put the values in molarity formula.

0.750 M = 0.66 mol / L of solution

L of solution = 0.66 mol / 0.750 M

L of solution = 0.88 L

Volume of solution is 0.88 L.