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Consider the following titration reaction:

2 NaOH + H2A ------> Na2A + 2 H2O

Where H2A is your unknown acid. If 32.18 mL of 0.126 M NaOH are required to titrate a 0.0783g sample of the acid, what is the molar mass of your acid?

a. 38.62 g/mol
b. 77.24 g/mol
c. 19.31 g/mol
d. 42.78 g/mol

Please tell me how to find the Molar Mass

2006-12-08 03:34:20 · 1 answers · asked by whawkeyes06 2 in Science & Mathematics Chemistry

1 answers

Mr = mass/moles, so we have to find the moles of H2A.

32.18 x 0.126/1000 is the number of moles of NaOH. But the number of moles of H2A is half this.

Now you can do it yourself!

2006-12-08 06:04:56 · answer #1 · answered by Gervald F 7 · 0 0

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