2007-03-19 03:41:08 · 4 answers · asked by thina a 1 in Science & Mathematics ➔ Chemistry
Because it does not compleatly disassociate into its ions in an aqueous solution.
2007-03-19 03:43:31 · answer #1 · answered by Thera 9 4 · 0⤊ 0⤋
it doesn't disassociate completely. the O holds onto the H pretty well. In contrast HBr is a strong acid because Br is perfectly happy as an ion and so it disassociates completely.
2007-03-19 12:15:23 · answer #2 · answered by shiara_blade 6 · 0⤊ 0⤋
For an HO acid, the higher the electronegativity, the stronger an acid it is, because it . Going down the period, electronegativity decreases, and Br is midway down the period, so it is sort of weak.
The more electronegative the nonmetal that HO is attached to is, the more electron density it pulls from the O-H bond.
2007-03-19 11:01:20 · answer #3 · answered by Istari C 2 · 0⤊ 0⤋
Dissociation is low. THat means that the OBr- and H+ ions don't completely separate, like they do in HCl.
Blame it on the Oxygen - it holds onto the hydrogen pretty strongly.
2007-03-19 10:45:47 · answer #4 · answered by Brian L 7 · 0⤊ 0⤋