Determine the molarity of a 4.5 L solution that contains 100g of NaOH dissolved (Na=23 g/mol, O=16 g/mol, H=1 g/mol)?
0.56 mol/L or 0.56 M
To find molarity, we'll use this formula:
We already have the volume, but we'll need to find the moles of solute (NaOH). From the given mass, we'll need to find the moles of NaOH using this:
Plugging in the moles to the molarity formula:
Either unit for molarity will be fine.