Question 3 please

1. Last time, we figured out which buffer to use if a friend in the biology department asked you to make a pH5.00 buffer for them. Acetic acid/sodium acetate was the best buffer system to use as the pKa(pKa=4.74) is close to the desired pH. What would the ratio of Ac- to HAc for this solution? pH=pKa+cos([AC]/[HAC])5=474+log([AC]/[HAC]).26=Gog5([AC]/[HAC])18.26=[AC]/[HAC]1.85=[ACC]/[HAC] 2. If you wanted to make a 1000ml solution that was 0.10M in acetic acid, how many grams of sodium acetate (molar mass 82g/mol ) would you need to add? molesAC=1.85molesofHAC=1.856.1=.185m9.185males82mol=15.179 3. Let's say your friend wanted to use formic acid (pKa=3.74) and sodium formate instead. What is the ratio of formate to formic acid you would need? Why is this a bad idea? (think in terms of the buffering capacity of the resulting to solution)