#2: In the reaction: 2H2O(l)<=> H3O^+(aq) + OH^-(aq) the conjugate acid-base pai
ID: 782846 • Letter: #
Question
#2: In the reaction: 2H2O(l)<=> H3O^+(aq) + OH^-(aq) the conjugate acid-base pairs are
A)pair 1: H2O and H2O; pair 2: H3O^+ and OH^-
B) pair 1: H3O^+ and OH^-; pair 2: H3O^+ and H2O
C)pair 1: H2O and OH^-; pair 2: OH^- and H2O
D) pair 1: H2O and OH^-; pair 2: H2O and H3O^+
E) pair 1: H3O^+ and HO^-; pair 2: OH^- and H3O^+
#3: Which one of these statements about strong acids is true?
A) All strong acids have H atoms bonded to electronegative oxygen atoms
B) Strong acids are 100% ionized in water
C) The conjugate base of a strong acid is itself a strong base
D) Strong acids are very concentrated acids
E) Strong acids produce solutions with a higher pH than weak acids
# 11: In the reaction CaO(s) + SO2(g) <--> CaSO3(s),
A) O2- acts as a lewis base, and SO2 acts as a Lewis acid
B) Ca2+ acts as a lewis base, and SO4^2- acts as a lewis acid
C)SO4^2- acts as a lewis base, and SO2 acts as a lewis acid
D) SO2 acts as a lewis base, and O2- acts as a lewis acid
E) SO2 acts as a lewis base, and Ca2+ acts as a lewis acid
#12: For H3PO4, Kal= 7.3 x 10^-3, Ka2= 6.2 x 10^-6, and Ka3= 4.8 x 10^-13. An aqueous solution of NaH2PO4 therefore would be
A) neutral
B)basic
C)Acidic
#13: What is the pH of a 0.30M Solution of HOCl (Ka= 3.5 x 10^-8)
A)7.45
B)6.54
C)7.98
D)5.22
E)3.99
#14: Which one of these salts will form a basic solution upon dissolving in water?
A)NaI
B)NaF
C)NH4NO3
D)LiBr
E)Cr(NO3)3
Explanation / Answer
2) D
3) B
11) C
12) C
13) E
14) NaF
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