I just need help finding the volume of acid to make a .1 M buffer solution (the

Question

I just need help finding the volume of acid to make a .1 M buffer solution (the last question)

A student must make a buffer solution with a pH of 2.0. Determine which of the acids and conjugate base Ma listed below are the best options to make a buffer at the specified pH. Weak acids O formic acid, K-1.77x104, 2.00 M O acetic acid, Ka= 1.75x10-5, 5.00 M Incorrect. Scroll down for more. sodium bisulfate monohydrate, Ka=1.20x10-2, 3.00 M O propionic acid, Ka-1.34x10-5, 3.00 M baes: sodium propionate, O sodium propionate, CH3CH2COONa sodium sulfate decahydrate, Na2SO4 10H2O O sodium formate, HCOONa sodium acetate trihydrate, CH3COONa 3H20 Scroll down to view more.

Explanation / Answer

Answer;-

V1 =? V2 = 100 mL

M1 = 3.00 M , M2 = 0.100 M

So, from dilution equation,

M1V1 = M2V2

V1 = 0.100 x 100/3.00

= 3.33 mL

Volume of acid needed = 3.33 mL

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