WorksheetsComparing Strengths of acids and bases
Total questions: 14
Worksheet time: 52mins
Ascorbic acid, H2C6H6O6(s), is a diprotic acid with K1 = 7.9 × 10–5 and K2 = 1.6 × 10–12. In a 0.005 M aqueous solution of ascorbic acid, which of the following species is present in the lowest concentration?
H3O+(aq)
H2C6H6O6(aq)
HC6H6O6-(aq)
C6H6O62-(aq)
Which of the following best represents a 0.100-molar solution of H2SO4 in water?
Equal moles of the indicated acids are dissolved in the amounts of water shown in the beakers below. In which solution will the percent ionization of the acid be the lowest?
Beaker 1
Beaker 2
Beaker 3
Beaker 4
Which is a strong acid?
12.0M HNO2
10.0M H2SO3
5.0M HI
5.0M HF
Which acid produces the strongest conjugate base?
HClO4 (Ka= 1.0 x 107)
HCN (Ka= 4.0 x 10-10)
H3PO4 (Ka= 7.5 x 10-3)
H2CO3 (Ka = 4.2 x 10-7)
Which represents an acid with the smallest Ka value?
HX
HY
HZ
This solution is filled with:
Weak Acid
Strong Base
Strong Acid
Weak Base
Which of these "HOY" acids is the weakest?
HOCl
HOI
HOBr
All of these are equally strong.
Which of these is the strongest Bronsted base?
F-
Cl-
Br-
I-
Which of these would have the lowest pKa? (Assume the species are numbered 1 to 4 going left to right.)
Species 1 (far left)
Species 2 (second from left)
Species 3 (third from left)
Species 4 (far right)
Which acid produces the strongest conjugate base?
HClO4 (Ka= 1.0 x 107)
HCN (Ka= 4.0 x 10-10)
H3PO4 (Ka= 7.5 x 10-3)
H2CO3 (Ka = 4.2 x 10-7)
Which of these is the strongest acid?
Hypochlorous acid
Chlorous acid
Chloric acid
Perchloric acid
Rank the following from lowest to highest acidity:
HF, H2O, NH3, CH4 (trend with electronegativity)
HF, H2O, NH3, CH4
CH4, NH3, H2O, HF
NH3, H2O, HF, CH4
CH4, H2O, NH3, HF
Which order lists the bases from the weakest to the strongest? (strong acids = weak conjugate bases)
BrO−, BrO2−, BrO3− , BrO4−
BrO4−, BrO3− , BrO−, BrO2−
BrO−, BrO2−, BrO4−, BrO3− ,
BrO4−, BrO3− , BrO2−, BrO−
