Rundown on molarity, solutions, and dilutions [ENDORSED]

[Shaleena 3C]

Can someone give me a rundown on molarity, solutions, and dilutions? Working on a study masterlist for final

[Hayden Jackson]

Molarity is the number of moles of the substance being dissolved divided by the number of liters of the substance its being dissolved in. Essentially its the concentration of something, for example if we dissolved 5 moles of NaCl in 2 liters of water, the molarity would be 2.5 M. A solution results from dissolving this NaCl (solute) into a the water (solvent) making a mixture of two different substances. Finally, a dilution comes from adding more water to an existing solution, so in our example, simply add 1 more liter of water to our 2.5 M solution of NaCl, which will decrease the molarity because the amount of NaCl is still the same, but with more water for it to be dissolved it means its concentration decreases. Hope this helps!

[305749341]

Molarity is defined as the moles of solute over liters of solution. Solution is a homogeneous mixture of two or more substances. A dilution is when we are manipulating the solution to create a certain desired molarity by adding more water, adding more solute, etc.