You are not logged in.
#1 2012-08-25 17:44:32
- Agnishom
- Star Member
Offline
pH = 0
I believe that there can't be any acid with its pH exactly equal to zero. It would mean the Hydrogen Activity to be ONE. But since I do not know what the definition of Hydrogen Activity is exactly.
Please suggest an way to explain it
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#2 2012-08-25 17:59:55
- bobbym
- Administrator
Online
Re: pH = 0
Hi Agnishom;
http://web.jjay.cuny.edu/~acarpi/NSC/7-ph.htm
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#3 2012-08-25 18:20:35
- Agnishom
- Star Member
Offline
Re: pH = 0
So is it really really possible,
that an acid has 0 pH
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#4 2012-08-25 18:28:27
- bobbym
- Administrator
Online
Re: pH = 0
Yes, I only thought a ph of 1 was possible. There are also super acids that are stronger than the big 3 ( HCl, HNO3, H2SO4).
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#5 2012-08-25 18:55:48
- Agnishom
- Star Member
Offline
Re: pH = 0
But pH of HCl is 0, how can any acid be stronger?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#6 2012-08-25 19:33:28
- bobbym
- Administrator
Online
Re: pH = 0
Hi;
Ph is a bit more complicated than that. See if you like this:
http://en.wikipedia.org/wiki/Superacid
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#7 2012-08-25 22:20:13
- Agnishom
- Star Member
Offline
Re: pH = 0
Either it is difficult to understand or I cannot pay enough concentration
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#8 2012-08-26 00:26:13
- bobbym
- Administrator
Online
Re: pH = 0
It is very difficult. Seems there are now a couple of acids that are a million times stronger than H2SO4.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#9 2012-08-26 04:06:31
- anonimnystefy
- Real Member
Offline
Re: pH = 0
The strongest known superacid is fluoroantimonic acid which is 2 milliard times stronger than the 100% sulfuric acid.
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#10 2012-08-26 06:23:43
- bob bundy
- Moderator
Offline
Re: pH = 0
hi Agnishom
I did not know this, but my wife does. She has a degree in chemistry! 
The 1 - 14 introduction to pH is a simplification.
The proper definition for ph is minus log (concentration of hydrated hydrogen ions in moles per cubic decimetre).
The graph below shows in sketch form how the pH varies with concentration.
Thus 0 is not the lower limit. For example, two molar hydrochloric acid (she has used this in her science lab) has a pH of -0.3
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#11 2012-08-26 13:30:29
- Agnishom
- Star Member
Offline
Re: pH = 0
So chemistry is quite dynamic
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#12 2012-08-26 18:25:09
- bob bundy
- Moderator
Offline
Re: pH = 0
Well, I'm not sure what you mean by dynamic. Her lab still has the marks from when an experiment went a bit too violently and splatted all over the ceiling. Her class, of course, thought it was GREAT!
Back to pH. Not even the 'pure water is 7' tells the whole truth apparently.
It depends on the temperature (and maybe the pressure). So water could have a pH that is a little under or over 7.
There must be a lower limit, but she is not sure what it is. Other physical forces would eventually come into play.
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#13 2012-08-28 23:17:00
- Agnishom
- Star Member
Offline
Re: pH = 0
What is the pH of boiling water??
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#14 2012-08-29 00:15:59
- anonimnystefy
- Real Member
Offline
Re: pH = 0
Hi Agnishom
If the water contains minerals, then they get removed from the water during the boiling, so the pH of boiling water is closer to 7 than the pH of regular water. If the water was pure, then the pH before, during and after the boiling is the same and equal to 7.
Hi Bob
Can the pH be >14?
Last edited by anonimnystefy (2012-08-29 00:16:41)
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#15 2012-08-29 00:28:54
- bob bundy
- Moderator
Offline
Re: pH = 0
Just got home from a trip.
What is the pH of boiling water??
Mrs B says 6 point something.
Can the pH be >14?
Mrs B doesn't know. 
shock!
I'll try to get better answers to these and again post later.
LATER EDIT: I've had a trawl around the internet and it seems that ph > 14 is possible. See, for example,
http://www.smc.edu/AcademicPrograms/Phy … cedure.pdf
And for boiling water:
http://www.brookscole.com/chemistry_d/t … ofab7.html
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#16 2012-08-29 05:48:07
- anonimnystefy
- Real Member
Offline
Re: pH = 0
Actually, nevermind, I found it. http://en.wikipedia.org/wiki/Superbase
Is the pH of boiling and boiled water the same?
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón