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Mole concentration, also known as molarity, is a fundamental concept in chemistry that measures the amount of solute dissolved in a given volume of solution. It is a crucial parameter used in various calculations and is commonly used in laboratories and industries. Understanding how to calculate mole concentration is essential for accurately determining the concentration of a solution, performing chemical reactions, and analyzing the behavior of substances in solution. In this guide, we will explore the concept of mole concentration, discuss its significance, and provide stepbystep instructions on how to calculate it. Whether you are a student learning chemistry or a professional working in the field, this guide will serve as a valuable resource to help you master the calculation of mole concentration.
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The mp concentration indicates the relationship between the mp number of a solute and the volume of the solution. To calculate the mp concentration, you can start with the number of mp and volume, mass and volume, or the number of mp and milliliters (ml). Then, with the above variables, apply the basic mp concentration formula to get the correct result.
Steps
Calculate Mp Concentration from Mp Count and Volume
 Example: Find the concentration mp of a solution containing 0.75 mp of NaCl in 4.2 liters of solution?
 For example:
 Number of mp = 0.75 mp NaCl
 Volume = 4.2 L
 Example: concentration mp = number of mp of solute / number of liters of solution = 0.75 mp / 4.2 L = 0.17857142
 Example: 0.179 M NaCl
Calculate Mp Concentration from Mass and Volume
 Example problem: Calculate the number of mp of the solution when dissolving 3.4 g of _{KMnO4} in 5.2 liters of water.
 For example:
 Mass = 3.4 g KMnO _{4}
 Volume = 5.2 L
 For example:
 Atomic mass of K = 39.1 g
 Atomic mass of Mn = 54.9 g
 Atomic mass of O = 16.0 g
 Total Atomic Mass = K + Mn + O + O + O + O = 39.1 + 54.9 + 16 + 16 + 16 + 16 = 158.0 g
 Example: grams of solute * (1/molecular mass of solute) = 3.4 g * (1 mp / 158 g) = 0.0215 mp
 Example: concentration mp = number of mp of solute / number of liters of solution = 0.0215 mp / 5.2 L = 0.004134615
 Example: 0.004 M KMnO _{4}
Calculate Mp Concentration from Number of mps and Milliliters of solution
 Example: Calculate the concentration mp of a solution containing 1.2 mp of CaCl _{2} in 2905 milliliters of water.
 For example:
 No. of mp = 1.2 mp CaCl _{2}
 Volume = 2905 ml
 Example: 2905 ml * (1 L / 1000 ml) = 2,905 L
 For example: concentration mp = number of mp of solute / number of liters of solution = 1.2 mp of CaCl _{2} / 2.905 L = 0.413080895
 Example: 0.413 M CaCl _{2}
More Practice

 Mass = 5.2 g NaCl
 Volume = 800 ml of water
 Atomic mass of Na = 22.99 g
 Atomic mass of Cl = 35.45 g
 Molecular mass of NaCl = 22.99 + 35.45 = 58.44 g
 mpe NaCl = 5.2 g NaCl * (1 mp / 58.44 g) = 0.8898 mp = 0.09 mp
 You can also take 800 ml multiplied by the milliliter to liter conversion factor of 1 L/1000 ml.
 To shorten the multiplication and division process as above, you can move the decimal point 3 digits to the left.
 Volume = 800 ml * (1 L / 1000 ml) = 800 ml / 1000 ml = 0.8 L
 Concentration mp = number of mp of solute / liters of solution = 0.09 mp / 0.8 L = 0.1125 mp/L
 Result: 0.11 M NaCl
wikiHow is a “wiki” site, which means that many of the articles here are written by multiple authors. To create this article, volunteer authors have edited and improved the article over time.
This article has been viewed 174,009 times.
The mp concentration indicates the relationship between the mp number of a solute and the volume of the solution. To calculate the mp concentration, you can start with the number of mp and volume, mass and volume, or the number of mp and milliliters (ml). Then, with the above variables, apply the basic mp concentration formula to get the correct result.
In conclusion, calculating the mole concentration is an essential concept in chemistry that allows us to quantify the amount of substance present in a given solution. By using the formula Mole concentration = Number of moles of solute / Volume of solvent, we are able to determine the number of moles of solute per unit volume of the solvent. This calculation helps us better understand the proportion of solute in a solution and provides a standardized measurement that can be easily compared across different solutions. Additionally, mole concentration is a crucial parameter in other calculations such as determining percent composition and reaction stoichiometry. It is important to accurately calculate mole concentration to ensure accurate experimental results and to make informed decisions in various chemical processes.
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