a buffer solution containing H2CO3 and NaHCO3 is to be prepared to maintain a pH of 7.00. What must be the ratio NaHO3/HCO in order to realize such as pH if Ka of carbonic acid is 4.3x10-7.

Question

hba · Answer

@wio

abmon98 · Answer

Henderson–Hasselbalch equation can be used to find the ph of a buffer solution or the ratio of conjugate acid and conjugate base
 pH = Pka + log (A-) / (HA)
7=4.3*10^-6+log(A-)/(HA)

abb0t · Answer

Then, take the inverse log to find the ratio and remove the log.