A 20mL aliquot of an unknown, weak organic acid was titrated by a 0.1130M NaOH solution. Just 0.00213L of NaOH was needed to reach equivalence point, which was indicated by the indicator changing colour.

Given:
[NaOH]= 0.1130M
V of NaOH needed to titrate = 0.00213L
V of unknown weak organic acid = 0.025L

Find:
The initial concentration of this weak acid.

Attempt:
http://i1084.photobucket.com/albums/j409/QRAWarrior/CHMA11-IMG-001-1.png
Was it correct to use the M1V1 = M2V2 approach to get the initial concentration of the weak acid?

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Part 2: The pH of the ac

Question

A 20mL aliquot of an unknown, weak organic acid was titrated by a 0.1130M NaOH solution. Just 0.00213L of NaOH was needed to reach equivalence point, which was indicated by the indicator changing colour. 

Given:
[NaOH]= 0.1130M
V of NaOH needed to titrate = 0.00213L
V of unknown weak organic acid = 0.025L 

Find:
The initial concentration of this weak acid.

Attempt:
http://i1084.photobucket.com/albums/j409/QRAWarrior/CHMA11-IMG-001-1.png
Was it correct to use the M1V1 = M2V2 approach to get the initial concentration of the weak acid?

-----------------
Part 2: The pH of the ac

anonymous · Answer

Ok just part I