Weak acid - strong base
50.0ml of 0.20 M HCOOH ( Ka = 1.8 x 10^-4) with 0.1 M NaOH
B) what is the initial pH ?
C) between initial and equivalence point
D) at equivalence point
E) beyond equivalence point
F) what happens exactly halfway to the equivalence point ?
It investigates the pH of the solution. The solution is detailed and well presented.
Calculate the pH
Calculate the pH upon diluting 2ml of 2 N HCL to a final volume of 100 ml?
Calcuate the pH upon addition of 0.0075 mole of solid NaOH to 100 ml of a 0.1 M solution of acetic acid (pKa=4.7)?
If equal molar amounts of Na2HPO4 and NaJpo4 are mixed in water, calcuate the resulting pH. The pKas of phosphoric acid are 2.1, 7.2, 12.4.
Calculate the % dissociation of a 0.1M solution of weak acid(pKa=5.0)?
Which of the following pairs would makw the best buffer at pH10.0?
a. Acetic acid & sodium acetate
b. NaH2PO4 & Na2HPO4
c. H2CO3 & NaHCO3
d. Methylammonium chloride & Methylamine