which of the following are strong acids and how do you know? which are the weak acids?
H2SO4, HI, HF, H3PO3, HNO3
2007-04-21 15:20:43 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
H2SO4 is strong, but only insofar as ===> H+ + HSO4-. HSO4- is a weak acid, HSO4- ===> H+ + SO4=
HI is a strong acid, completely ioized into H+ + I-
HF is a weak acid, because the Ka is only 10^-4.
H3PO3 is strong, but only insofar as ===> H+ + H2PO3-. The other two steps are weak acids, because the Ka's are finite.
HNO3 is a strong acid, completely ionized.
You have to differentiate. Some people say that HF is strong because "Haw foo! It even eats glass!" But that's because 4HF + SiO2 ===> SiF4 + 2H2O.
2007-04-21 15:30:44 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
Strong acids: H2SO4, HNO3, HI
Weak acids" H3PO3
2007-04-22 00:10:14 · answer #2 · answered by Ms. Buckyball 3 · 0⤊ 0⤋
Sulfuric Acid. H2so4.
2007-04-21 22:54:12 · answer #3 · answered by SweetNurse 4 · 0⤊ 0⤋
HF is a weak acid in dilute solutions. However,
"When the concentration of HF approaches 100%, the acidity increases dramatically due to the following equilibrium:
2HF â H+ + FHFâ
The FHFâ anion is stabilized by the very strong hydrogen - fluorine hydrogen bond. In acetic acid and similar solvents, hydrofluoric acid is the strongest of the hydrohalic acids."
2007-04-21 22:52:35 · answer #4 · answered by gp4rts 7 · 0⤊ 0⤋
H2SO4, HI, and HNO3
2007-04-21 22:30:17 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I have no clue but applaud your getting your homework done even though its the weekend. (I'm just guessing its homework).
2007-04-21 22:27:42 · answer #6 · answered by ersof59 4 · 1⤊ 0⤋