The formula to calculate the molar concentration is:
\[ M = \frac{n}{v} \]
Where:
A molar concentration is defined as a ratio of the total moles of a solute to the total moles of a solution. This is also often referred to as molarity.
Molar concentration and molarity are synonymous. They are both ways of describing the total number of moles of a solute in a certain volume of a solution.
A 1 molar concentration means that there is a total of 1 mole of a substance in 1 liter of a volume.
The molar concentration of any mixture cannot be negative. If looking in terms of the change in molar concentration, then yes, the change in the concentration could be negative.
A molar mass is not the same as a molar concentration. A molar mass is a measure of the number of moles per unit of mass, while a concentration is the number of moles per unit of volume.
A molar concentration only depends on the moles and volume, however, if the volume of the solution changes because of a change in temperature, such as water boiling off, then the molar concentration will change.
Molar concentration is most used when analyzing chemical solutions and processes. The analysis of these solutions and changes in moles is the basis of many useful processes.
Let's assume the following values:
Step 1: Calculate the molar concentration:
\[ M = \frac{2}{1} = 2 \text{ moles/L} \]