Osmolarity, sometimes referred to as ionic molarity, represents the number of moles of ions per liter of solutions. So sounds kind of familiar. We know that molarity represents moles of solute per liters of solution. Now we're looking at solutes that have charges because now we're looking at ions and we're going to say when it comes to osmolarity, there are a few different methods that we can employ to answer particular questions.
Now in method one, we have direct calculation of osmolarity. In this first method we use the moles of ions and the leaders of solution with its formula to calculate osmolarity. Now here this is just simply osmolarity=moles of ionsliters of solution, Again pretty similar to molarity=moles of soluteliters of solution.
Now that we've gotten the basic understanding of what Osmolarity represents, let's click on to the next video and start doing some example questions dealing with Osmolarity under Method One.