Question

How can I convert percent concentration to molarity?

Answer 1

Molarity can be defined as the total number of solutes present in one liter of the solution. Molarity of the solution is dependent on the change in physical properties of the system like temperature, pressure and volume of the system. It is represented by M.

Complete step by step answer:
- Percentage concentration of any solution is expressed as mass percent i.e. mass percent composition of the solution can be given as:
$\dfrac{Mass\ \text{of the component in the solution}}{Total\ \text{mass of the solution}}\times 100$
- To convert the percentage composition to molarity we first have to know about the molarity formula that how molarity can be calculated, we know that molarity is given by the number of solutes present in one liter of the solution and molarity can be calculated by the formula:
$M=\dfrac{n}{V}$
- Where $n$ is the number of moles, V volume of the solution. Mole can be defined as the mass of the substance which consists of equal quantities of basic units. Number of moles can be calculated as:
$Number\ \text{of moles=}\dfrac{Mass\ \text{of substance}}{Mass\ \text{of mole}}$
- Hence to convert mass percentage into molarity we have to follow the following steps:
1. First calculate the mass of 1 liter of the solution.
2. After that calculate the mass of the given compound.
3. Now there is a turn to calculate moles of the solution.
4. Now we know the number of moles and volume remains 1 liter so by this we can easily calculate the number of moles.
Hence by following these steps we can easily convert mass percentage into molarity.

Note: Solution is a homogeneous mixture of two or more substances and solution is made up of two components solute and solvent whereas solute is that substance which gets dissolved and solvent is that substance in which solute is dissolved.