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Thinking of starting a business but not sure where to stThe Ksp expression is A. Ksp = Sr2+
[ ]3
PO4
3−
[ ]2 B. Ksp = 3Sr2+
[ ] 2PO4
3−
[ ] C. Ksp = 3Sr2+
[ ]3
2PO4
3−
[ ]2 D. Ksp =
3Sr2+
[ ]3
2PO4
3−
[ ]2
Sr3
PO4
( )2
[ ] 21. A solution is found to contain a Pb2+
[ ] of 0.10M. What is the maximum SO4
2−
[ ] that can exist in this solution before a precipitate forms? A. SO4
2−
[ ] = 1.8 × 10−9
M
B. SO4
2−
[ ] = 1.8 × 10−8
M
C. SO4
2−
[ ] = 1.8 × 10−7
M
D. SO4
2−
[ ] = 1.3 × 10−4
M
22. Which of the following general properties could be used to describe a basic solution?
I conducts electricity
II reacts with Na2
CO3
to produce CO2
III feels slippery A. III only B. I and III only C. II and III only D. I, II and III Page 10 Chemistry 12 – Resource Exam A 23. Which of the following is a conjugate acid base pair?
Acid Conjugate base A. NH4
+
NH3 B. H3
O
+
OH−
C. H3
PO4
HPO4
2−
D. HPO4
2−
H2
PO4
− 24. Consider the following 1.0 M acid solutions:
• H2
CO3
• HClO4
• H3
C6
H5
O7
Rank the acid solutions in order of decreasing conductivity. A. H3
C6
H5
O7
> H2
CO3
> HClO4 B. HClO4
> H2
CO3
> H3
C6
H5
O7
C. H2
CO3
> H3
C6
H5
O7
> HClO4 D. HClO4
> H3
C6
H5
O7
> H2
CO3
25. Water reacts most completely as a base with which of the following? A. HSO3
−
B. H3
BO3
C. H2
PO4
− D. Al H( ) 2
O 6
3+Chemistry 12 – Resource Exam A Page 11 26. Which species in solution will produce the greatest hydroxide ion concentration? A. F
−
B. H2
S
C. PO4
3−
D. HPO4
2−
27. A base is added to water and a new equilibrium is established. The