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A student must make a buffer solution with a pH of 1.00. Determine which weak acid...

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Chemistry

A student must make a buffer solution with a pH of 1.00.

Determine which weak acid is the best option to make a buffer atthe specified pH.

formic acid,Ka = 1.77 x 10−4,2.00 M

sodium bisulfate monohydrate, Ka = 1.20 x10−2, 3.00 M

acetic acid, Ka = 1.75 x 10−5,5.00 M

propionic acid, Ka =1.34 x 10−5,3.00 M



Determine which conjugate base is the best option to make a bufferat the specified pH.

sodium acetate trihydrate,CH3COONaâ‹…3H2O

sodium propionate, CH3CH2COONa

sodium sulfate decahydrate,Na2SO4â‹…10H2O

sodium formate, HCOONa



The final volume of buffer solution must be 100.00 mL and the finalconcentration of the weak acid must be 0.100 M.
Based on this information, what mass of solid conjugate base shouldthe student weigh out to make the buffer solution with a pH of1.00?

mass = Answer g

Based on this information, what volume of acid should the studentmeasure to make the buffer solution?

volume = Answer mL

Answer & Explanation Solved by verified expert
4.0 Ratings (785 Votes)
1 Buffer capacity range pka 1 to pka1 so that To get a buffer with pH 1 The pka of acid must be close to 1 Hence among the given sodium    See Answer
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