👉 Concentrations, often denoted as C, represent the amount of a substance dissolved in a given volume of solution, typically expressed in units like moles per liter (mol/L or M). The core concept involves understanding how the concentration of a solute changes with varying amounts of solvent or vice versa, usually through the use of molarity (M), which is defined as moles of solute per liter of solution. Concentration can also be described using other units like mass percent (mass of solute divided by the total mass of solution multiplied by 100), molality (moles of solute per kilogram of solvent), or parts per million (ppm). These mathematical relationships allow chemists to precisely control and measure the composition of solutions, crucial for various applications in chemistry, biochemistry, and industry.
