determination of ionization constant question~~?

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determination of ionization constant question~~?

1g of unknown acid mix with 120mL water.
then takes 25mL of this mixture and titrate with 0.1M NaOH.

and takes 4.475mL of NaOH to reach end point.

how to find the initial concentration of weak acid?
please help..

2007-04-04 22:18:04 · 1 answers · asked by mr.x 1 in Science & Mathematics ➔ Chemistry

1 answers

4.475ml of NaOH 0.1M contain
4.475*10^-3*0.1= 4.47510^-4 mole of NaOH

these quantity neutralizes 1*25/120=0.208 g of acid

you can not go further since we do not know 2 parameters

A =the molecular weight of the acid
B= is this acid monovalent, bivalent, trivalent?

2007-04-04 22:36:22 · answer #1 · answered by maussy 7 · 0⤊ 0⤋