2006-11-03 01:52:28 · 7 answers · asked by edison yan 1 in Science & Mathematics ➔ Chemistry
"p" is defined as minus the log...pH is saying -log(H).
Therefore, -log(4) = 1 x 10 to the minus 4 = .0001
a pH of 8 = 1 x 10 to the minus 8 = .00000001
so the change in concentration is 10 to the 4 or 10,000 times
2006-11-03 02:00:43 · answer #1 · answered by brad34471 3 · 1⤊ 0⤋
pH scale is logarhythmic- it is in factors of 10.
If the pH changes from 4 to 8, the H+ concentration decreases because the solution becomes more basic (higher concentration of -OH). Because it slides 4 points towards the basic end, it will be decreasing H+ concentration by a factor of 1000.
2006-11-03 01:59:55 · answer #2 · answered by kiwi 3 · 0⤊ 0⤋
The pH of a sturdy acid is alot shrink down than a susceptible acid (eg useful acid ought to = pH:a million, wheras a susceptible acid pH: 3) on the comparable interest. it is thinking the useful acid completly dissociates (so is many times product) wheras a susceptible acid would maximum suitable particularly dissociate (product and reactant). The pH is plagued by the information (larger the concentration= shrink the pH, or the extra acidic that's). to be sure pH from preliminary information (to illustrate with H20 .....> h30+ + OH-) in case you be responsive to the preliminary interest of the two pH is particularly = -log(information of H30+ or OH-) to be sure the concentration from the pH, that's in easy terms 10^pH eg if the pH became 3.3 you should in all hazard bypass.....10^3.3 = interest
2016-12-09 01:50:59 · answer #3 · answered by ? 4 · 0⤊ 0⤋
A pH of 4 has the [H] = 1.0 * 10^-4
A pH of 8 has the [H] = 1.0 * 10^-8
A begining pH of 4 was 0.0001 molar concentration of the hydronium ion.
The ending pH of 8 had 0.00000008 molar concentraion of the hydronium ion.
The difference is 0.00009999 or 9.999 *10^-5
2006-11-03 02:05:50 · answer #4 · answered by Mr Cellophane 6 · 0⤊ 1⤋
If pH increases 4 points, then the decrese of [H+] is 10,000 times the original concetration. This is because the higher the pH, the lesser acidic the solution.
That´s it!
Good luck!
2006-11-03 02:02:10 · answer #5 · answered by CHESSLARUS 7 · 0⤊ 0⤋
the H+ concentration will decrease as pH increases just like mixing acids and bases.
2006-11-03 01:59:27 · answer #6 · answered by Jdicu812 1 · 0⤊ 0⤋
pH = -log[H+]
2006-11-03 02:00:37 · answer #7 · answered by Anonymous · 0⤊ 0⤋