1. 0.62 is correct.
2. base/acid = 0.62 or
base = 0.62*acid (equation 1)
You want 0.1M x 1 L = 0.1 mol and
base + acid = 0.1 mol (equation 2)
Solve the two equation simultaneously (in which base and acid will be in mols), then convert mols to grams of each.
prepare a phosphate buffer with pH= 7 from solid NaH2PO4 (pKa =7.21) and Na2HPO4.
1) calculate the ratio of [CB]/[acid]
I got the ratio as 0.62
2) calculate the mass of each component required to make 1L of a .1 M buffer solution
3) if the pH is 7.10, how would you adjust it to 7.0?
1 answer
2 answers