(a) What is the change in pH when [OH -] increases by a factor of ten?
(b) What is the change in [H3O+] when the pH decreases by four units?
does it decrease or increase and by what factor?
2006-10-04 06:31:57 · 5 answers · asked by mariah3785 1 in Science & Mathematics ➔ Chemistry
(a) When [OH-] increases by a factor of ten then [H3O+] decreases by the same factor. Because pH = -log[H3O+], pH will increase by one(1).
(b). When pH decreases by 4 units the [H3O+] increases by a factor of 10^4, that means by a factor of 10,000.
Say for example that initial pH = 6, that means that initially [H3O+] = 10^(-6). When pH = 6 - 4 = 2, then [H3O+] = 10^(-2). But:
10^(-2)/10^(-6) = 10^4 = 10,000
2006-10-04 08:09:40 · answer #1 · answered by Dimos F 4 · 0⤊ 0⤋
(a) What is the change in pH when [OH -] increases by a factor of ten?
Yes
(b) What is the change in [H3O+] when the pH decreases by four units?
4 X Pi
(c) does it decrease or increase and by what factor?
Correct
2006-10-04 06:35:17 · answer #2 · answered by god knows and sees else Yahoo 6 · 0⤊ 1⤋
a) is ph increases by 1 because it is a base 10 log scale. So any change by a factor of 10 is a change in ph by 1.
b) use the equation: pH = -log[H+]
2006-10-04 06:38:01 · answer #3 · answered by ohmneo 3 · 0⤊ 0⤋
The fabricated from 2 consecutive words is larger than a million. [a million + a million/4n^2] * [(a million + a million/4(n+a million)^2] = a million + a million/4n^2 + a million/4(n+a million)^2 + a million/16n^2 (n+a million)^2 = So, i assume that we are in a position to precise that because of the fact the fabricated from words that seem as though this, the place n is two, 4,6,... prod ]2n 2 to oo] [a million + a million/4n^2 + a million/4(n+a million)^2 + a million/16n^2 (n+a million)^2] Or prod [n a million to oo] [a million + a million/n^2 + a million/(n+a million)^2 + a million/n^2 (n+a million)^2] consistent with probability that's of little need in any respect... nonetheless thinking approximately this question. i visit purpose your different situation later, if I even have time. you could provide us extra beneficial than a million day. BTW, I nonetheless could initiate with MY homework! Homework is the way you learn for a attempt. So, what's the subject if somebody teaches you something you do no longer understand in the previous the attempt so as which you do properly on your examination? and that i'm notably useful that Vikram became being humorous, he made me smile. EDIT I in basic terms observed that the respond is pi/2. i'd delete my answer, this is of no properly worth, yet I won't because of the fact I nonetheless will attempt the different one later.
2016-12-26 09:30:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋
huh? wht? huh? wht?
wtf?
this is confusing!!!
srry
2006-10-04 06:39:24 · answer #5 · answered by itz all bout me ya betta belive 1 · 0⤊ 1⤋