2. Calcium oxide reacts with water in a highly exothermic process known as slaking:
CaO(s) + H₂O(1)→ Ca(OH)2(s)
Calcium hydroxide is known as slaked lime and a solution of it is limewater. The solubility
of calcium hydroxide is 1.56g dm³.
a) What is the concentration of limewater in mol dm-³?
b) How much limewater could be made from 17.4g of quicklime?