Molarity Formula:
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Molarity (M) is a measure of the concentration of a solute in a solution, defined as the number of moles of solute per liter of solution. It's one of the most commonly used units of concentration in chemistry.
The calculator uses the molarity formula:
Where:
Explanation: The formula calculates how concentrated a solution is by dividing the amount of solute (in moles) by the total volume of the solution.
Details: Molarity is crucial for preparing solutions with precise concentrations, performing chemical reactions with accurate stoichiometry, and conducting quantitative analysis in chemistry and biology.
Tips: Enter the amount of solute in moles and the volume of solution in liters. Both values must be positive numbers. The calculator will compute the molar concentration in mol/L.
Q1: What's the difference between molarity and molality?
A: Molarity is moles per liter of solution, while molality is moles per kilogram of solvent. Molarity changes with temperature, molality doesn't.
Q2: How do I convert grams to moles for the calculation?
A: Divide the mass in grams by the molecular weight of the substance (g/mol) to get moles.
Q3: What are typical molarity values?
A: Concentrations range from very dilute (10^-6 M) to highly concentrated (10+ M), depending on the application.
Q4: Why is molarity temperature dependent?
A: Because volume changes with temperature, while the amount of solute (moles) remains constant.
Q5: How precise should my measurements be?
A: For most laboratory work, 4 significant figures is sufficient, but requirements vary by application.