Moles and Concentration
Concentration tells you exactly how much solute is packed into each cubic decimetre of solution - think of it like measuring how strong your squash is. The stronger the concentration, the more solute particles you've got floating about in there.
The key formula you need to master is c = n/v, where c is concentration (mol/dm³), n is moles, and v is volume (dm³). This simple equation lets you work out any of these three values if you know the other two.
Standard solutions are your reference points - solutions where you know the exact concentration. You'll make these using a volumetric flask, which gives you super-accurate measurements for your experiments.
Quick Tip: To convert between mol/dm³ and g/dm³, multiply or divide by the molar mass (M). This conversion pops up constantly in exam questions!
