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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 is one of the most commonly used units of concentration in chemistry and physiology.
The calculator uses the molarity formula:
Where:
Explanation: The formula calculates the concentration by dividing the amount of substance (in moles) by the volume of the solution (in liters).
Details: Accurate molarity calculation is essential for preparing solutions with precise concentrations, conducting chemical reactions, and various physiological experiments and medical applications.
Tips: Enter the moles of solute and volume of solution in liters. Both values must be positive numbers greater than zero.
Q1: What is the difference between molarity and molality?
A: Molarity is moles per liter of solution, while molality is moles per kilogram of solvent. Molarity is temperature-dependent, while molality is not.
Q2: How do I convert between molarity and other concentration units?
A: Conversions require knowing the molecular weight of the solute and density of the solution for accurate conversions between molarity, mass percent, and other units.
Q3: Why is molarity important in physiology?
A: Molarity is crucial for preparing physiological saline solutions, drug formulations, and understanding osmotic balance in biological systems.
Q4: What are common molarity values in physiological solutions?
A: Physiological saline is approximately 0.15 M NaCl, while glucose solutions for IV administration typically range from 0.05-0.5 M.
Q5: How does temperature affect molarity?
A: Since volume expands with temperature, molarity decreases slightly as temperature increases. For precise work, measurements should be made at standard temperature.