Question 1:For many weak acid or weak base calculations, you canuse a simplifying assumption to avoid solving quadraticequations.Classify these situations by whether the assumption isvalid or the quadratic formula is required.
HA=.001 Ka=1x10-5
HA=1M Ka = 1x10-3
HA=.01M Ka=1x10-5
HA=.1M Ka=1x10-3
HA=.01M Ka = 1x10-4
Question 2: The Ka of a monoprotic weak acid is 5.20 × 10-3.What is the percent ionization of a 0.189 M solution of thisacid?
Question 3: Phosphoric acid, H3PO4(aq), is a triprotic acid,meaning that one molecule of the acid has three acidic protons.Estimate the concentrations of all species in a 0.350 M phosphoricacid solution. pKa1=2.16 pKa2=7.21 pKa3=12.32
H3PO4 =
H2PO4- =
(PO4)3- =
H+ =
