Calculate the molar concentration of ag and so, at the equilibrium. [10 marks] iv) the sulfate anion (so42) is a very weak base undergoing the following (balanced) acid-base equilibrium reaction in water (kb = 8.3x10 "); so42- + h2o = hso4 + oh calculate the ph of the ag2so4 solution (shown above) at the equilibrium (hint: disregard the autodissociation of water). [20 marks) justify your answers by including workings, calculations and units.

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.