Which equation describes a reduction? Upper M g (s) right arrow Uper M g superscript 2 plus (a q) plus 2 e superscript minus. 2 upper C l plus 2 e superscript minus right arrow 2 upper C l superscript minus. Upper N a (s) right arrow upper N a superscript plus (a q) plus e superscript minus. Upper A l (s) right arrow upper A l superscript 3 plus (a q) plus 3 e superscript minus.

Answer asap need 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.