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![[Post New]](/templates/default/images/icon_minipost_new.gif) 5 Jan 2007 23:27:34 IST
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this is simple.when we use phenolphthalein as indicator the bicarbonate gets polymerised and so we get only half the titre value of carbonate and no titire value of bicarbonate.
me of H2SO4(PHENOLPHTHALEIN) =0.5*ME OF Na2CO3
CALCULATE ME OF Na2CO3
THEN
0.5*ME OF Na2CO3+ME OF NaHCO3=ME OF H2SO4(METHYL ORANGE)
SOLVE THE 2 EQUATIONS AND GET UR ANSWER.
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