Question

Given the amount of solute in grams and the volume of the solution in milliliters, how would you go about calculating the molarity of the solution?

Answer 1

This is the procedure that you have to follow to calculate the molarity of the solution, given the amount of solute in grams and the volume of solutions in miliiters.


1) Formula:

 Molarity is a concentration unit that means number of moles of solute per liter of solution. This is:

M = n / V (in liters)

2) To find the number of moles you divide the mass in grams by the molar mass of the compound. This is:

n = mass in grams of soulte / molar mass of solute

3) Then, convert the volume of the solution given in mililiters to liters by dividing by 1,000. This is:

V (liters) = volume in ml / 1,000.

4) Finally, divide n by V(liters) to have M.