You wish to prepare an hc2h3o2 buffer with a ph of 4.24. if the pka of is 4.74, what ratio of c2h3o2 /hc2h3o2 must you use?

To solve this problem, we can use the Henderson-Hasselbalch Equation which relates the pH to the measure of acidity pKa. The equation is given as:

pH = pKa + log ([base]/[acid])                ---> 1

Where,

[base] = concentration of C2H3O2 in molarity or moles

[acid] = concentration of  HC2H3O2 in molarity or moles

For the sake of easy calculation, let us assume that:

[base] = 1

[acid] = x

Therefore using equation 1,
4.24 = 4.74 + log (1 / x) 

log (1 / x) = - 0.5

1 / x = 0.6065 

the answer is c i believe

i think   the answer is c hope i'm right