1. 50cm3 of 0.5 moldm-3 HCl was added to 150cm3 of water – what will the concentration of
the new solution be in moldm-3?
2. What volume in cm3 of water needs to be added to 10 cm3 of 5 mol dm-3 NaOH to make a
new concentration of 1 moldm-3 ?