Learning Goal. To understand hoe butters use teserves of copjugate acid and conjpgale tibse to counteract ( beabor with 1,10102mL of an acote acid bulter with a ph of 5.000 is silting on a bonchiop. The the eleets of acid or base addition on pit. A butler is a midure of a conyuge acidbase par. the beaker. How much will the pH charge? The pK2 of acabic acid is 4.740 . In other words, it is a coltion that contains a weok acid and is coniugate beee. of a weik bost and its cenvage acid. For exseple, an osetic acid butler coneists of Asete acit, CH2COOH and ts corlugate base, the acetate ion CH3COO Decause kis canot sinply be added to a solution. the ceriugate base in nddes in a sah form iog. trdum acolale NaCHCOO ) Eutlert work because the oorlusase acid base paif mpik bogether to nerdualze the Adston of II or OII cons thea, lor esampeo, in 11+ ioes ave added is the acetale buller descrited above, hey wil be larpely removed bom ecoution by the reaction of fi ' with the coniugato base: H++CH3COOCH3COOH Simiarfy, any added OHi ione wil be noutratzed by a reastige wath the coriug ase acid OH+CH1OOOH+CH3COO+H3O Tha bufer eysam it desoribed by the Henderent Hassenthach equation