Example 3 solution of acid (HA), 250 cubic centimeter unto a H3O + ion 0.05 mol solution concentration, this vest. If additional acid 0.2 moles of this down further by the aqueous solution is a fixed-volume original. The solution is to have much concentration.How to make the.HA H3O+ (aq) + A- (aq) 0.05 mol/250 cm3HA HA 250 cm3 aqueous solution contains 0.05 molHA HA solution there are 1000 cm3 = = 0.20 mol.Therefore, the solution is available from 0.20 mol/l concentrations.If additional acid 0.2 moles again.Solution contains 0.05 HA all inclusive = + 0.2 = 0.25 mol.There are 250 cm 3 solution 0.25 HA HA mol.HA HA solution there are 1000 cm3 = = 1.00 mol.Therefore, the solution is available from 1.00 MOL/litre concentration.
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