1 Molar is Equal to How Many Percent?
In chemistry, molarity and percentage are two common ways to express the concentration of a solution. While they may seem related, they are actually different units of measurement. In this article, we'll explore the relationship between molarity and percentage, and answer the question: 1 molar is equal to how many percent?
What is Molarity?
Molarity is a unit of measurement that represents the number of moles of solute per liter of solution. It is denoted by the symbol "M" and is defined as:
M = moles of solute / liters of solution
For example, a 1 molar (1 M) solution of sodium chloride (NaCl) contains 1 mole of NaCl per liter of solution.
What is Percentage?
Percentage, on the other hand, is a unit of measurement that represents the proportion of a solute in a solution as a fraction of 100. It is denoted by the symbol "%" and is defined as:
% = (mass of solute / mass of solution) x 100
For example, a 10% solution of NaCl contains 10 grams of NaCl per 100 grams of solution.
Converting Molarity to Percentage
Now, let's convert 1 molar to percentage. To do this, we need to know the molar mass of the solute. The molar mass of NaCl is 58.44 g/mol.
Let's assume we have a 1 M solution of NaCl. This means we have 1 mole of NaCl per liter of solution. To find the mass of NaCl in 1 liter of solution, we multiply the molar mass by the number of moles:
mass of NaCl = molar mass x number of moles = 58.44 g/mol x 1 mol = 58.44 g
Since the density of water is approximately 1 g/mL, we can assume that the mass of 1 liter of solution is approximately 1000 g. Therefore, the percentage of NaCl in the solution is:
% = (mass of solute / mass of solution) x 100 = (58.44 g / 1000 g) x 100 = 5.844%
So, 1 molar is equal to approximately 5.844%.
Conclusion
In conclusion, 1 molar is equal to approximately 5.844% for a solution of sodium chloride. However, this conversion factor will vary depending on the molar mass of the solute. It's essential to understand the difference between molarity and percentage and how to convert between these units of measurement in chemistry.
