Which compound has a very large value of Ka in aqueous solution?
H3PO4
KOH
NH3
HNO3
Which solution is basic?
[H3O+] = 1.0 × 10^-4
[OH-] = 1.0 × 10^-10
[H3O+] = 1.0 × 10^-10
[OH-] = 1.0 × 10^-7
Which of the following is a triprotic acid?
NH3
CH3COOH
HNO3
H3PO4
A necessary requirement for a Bronsted base is:
the presence of a metal ion in its formula.
the presence of hydroxide in its formula.
the presence of water as a reaction medium.
a lone pair of electrons in its Lewis dot structure.
According to Bronsted-Lowry theory, acid-base reactions can be described as ________ reactions.
electron transfer
ion transfer
nuclear transfer
proton transfer
Acetic acid is a weak acid in water because it is
completely dissociated into hydronium ions and acetate ions.
unable to hold onto its hydrogen ion.
only slightly soluble.
only slightly dissociated into ions.
At 25°C (room temperature), the value of Kw is ________.
1.00 × 10^-14
1.00 × 10^14
1.00 × 10^-7
1.00 × 10^7