30.
A salt is a compound formed by the replacement of _______________ions in
an___________ with a __________ or a radical acting like a metal. For example,
the salt NaCl is formed by the replacement of the hydrogen in______ by the metal
________. The same salt NaCl results when NaOH reacts with _______. In
general, we can say that an ionic compound is a salt if it contains a positive ion
other than _________________ and a negative ion other than
____________________ or __________________ .
31.
For each of the eight compounds listed below; indicate whether it is an acid, a
base, or a salt.
a.
NaNO3 _______________
b.
Al(HCO3) 3 _________________
c.
K2CO3 _______________________
d.
FePO4 ______________________
e.
Ca(OH) 2 ______________________
f.
Na(C2H3O2) ____________________
g.
NH4Cl _______________________
h.
H2SO4 ___________________
32. If the pH of a solution is 6.9, it is slightly ____________. If the pH is 7.5, it is
slightly _____________. If the pH is 8.8, the solution is __________ .
33. According to the subcourse, the devices used to measure pH are
____________________ paper, and a ___________ ____________
MD0803
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