1) The carbonate ion is CO32-. Which of the following is carbonic acid?
a) HCO3
b) H2CO3
c) H(CO3)2
d) HClO3
2) Which of the following is the correct name for the acid HCN ?
a) cyanic acid
b) cyanous acid
c) hydrocyanous acid
d) hydrocyanic acid
3) If an acid does not contain oxygen, the name of the acid begins with which of the following prefixes?
a) anoxy-
b) peroxy-
c) hydro-
d) mono-
3 Answers
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a
d
a
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1. b) H2CO3
Two H+ ions are required to equal the 2- charge of carbonate.
2. d) hydrocyanic acid
3. c)
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You have H2CO3 because hydrogens each have a +1 charge (and have to be added one at a time to turn something into an acid), and you have CO3 2-, so you have to add 2 hydrogens to make it neutral.
