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Molarity Calculator

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Molarity estimates the concentration of the solution which is expressed as number of moles of solute in a liter of solution. Mathematically, molarity is calculated as,

Molarity(M) = $\frac{number \ of \ moles \ of \ solute}{liters \ of \ solution}$.

The molarity calculator will help to calculate the molarity of the given solution.
 

Steps

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Steps to determine the molarity of the solution :

Step 1 : Make a note of the given parameter values from the question.

Step 2 : Plugin the given values into the molarity formula given and get the result according to the question.
Molarity(M) = $\frac{number \ of \ moles \ of \ solute}{liters \ of \ solution}$

Problems

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Here are some of solved problems of molarity. You can check the problems to understand it more clearly.

Solved Examples

Question 1: Determine the molarity of the solution when 0.75 mol is dissolved in 2.00 L of solution.
Solution:
 
Given, number of moles = 0.75 mol
solution in L = 2.00 L

Molarity of the given solution is given by,
Molarity(M) = $\frac{number \ of \ moles \ of \ solute}{liters \ of \ solution}$

Molarity(M) = $\frac{0.75 \ mol}{2.00 L }$

Molarity(M) = 0.375 M.
 

Question 2: If 25.0 ml of solution contains 1.23 M KBr, calculate the number of moles of Kbr.
Solution:
 
Given, Molarity of the solution = 1.23 M
solution in L = 25.0 mL = 0.025 L

Number of moles of Kbr is given by,
Molarity(M) = $\frac{number \ of \ moles \ of \ solute}{liters \ of \ solution}$

Number of moles of Kbr = Molarity of the solution $\times$ liters of solution

Number of moles of Kbr = 1.23 M $\times$ 0.025 L

Number of moles of Kbr = 0.0308