2007-03-20 09:33:38 · 15 answers · asked by babe 1 in Science & Mathematics ➔ Chemistry
pH = - log([H+])
it give a logarithmic indication as to the solutions acidity (low pH) or basicity (high pH).
2007-03-20 09:37:45 · answer #1 · answered by Dr Dave P 7 · 2⤊ 0⤋
pH is a measure of the acidity or basicity of a solution.
Solutions with a pH less than 7 are considered acidic, while those with a pH greater than seven are considered an alkali/base.
pH 7 is defined as neutral because it is the pH of pure water at 25 °C.
pH is formally dependent upon the activity of hydrogen[1] ions (H+),[2] but for very pure dilute solutions, the molarity may be used as a substitute with some sacrifice of accuracy
2007-03-22 16:53:45 · answer #2 · answered by Me 2 · 0⤊ 0⤋
The pH is the Proportion of H+ ions in solution. This can also be related to their Ka value (dissasociation constant). As a simple answer- a low pH means a high concentration of H+ ions (for example in conc. hydrochloric or sulphuric acid) while a high pH is more alkali (Sodium hydroxide solution, bleach etc)
The pH scale ranges from 0 to 14 (although technically a zero acid cannot exist) and tyhe numbers are actuallt the log of the H+ ions.
Hope this helps
2007-03-20 17:07:14 · answer #3 · answered by Moi? 3 · 0⤊ 0⤋
PH is the measurement of the acidity or alkalinaty of a substance, usually being a liquid.
a ph of 0= acid.
a ph of 7 is neutral and,
a ph of 14 is alkali.
tap water is usually slightly alkaline at a ph of between 7 and 8 depending on the water suppl you are using (the area u live in) and rain water is slightly acid at around PH 6.5
2007-03-21 12:23:51 · answer #4 · answered by STUART T 1 · 0⤊ 0⤋
PH is the abbreviation for "potential Hydrogen."
The pH of any solution is the measure of its' hydrogen-ion concentration. The higher the pH reading, the more alkaline and oxygen rich the fluid is. The lower the pH reading, the more acidic and oxygen deprived the fluid is.
The pH range is from 0 to 14, with 7.0 being neutral. Anything above 7.0 is alkaline, anything below 7.0 is considered acidic.
There you have it folks.
2007-03-20 16:41:39 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The pH of a solution is the acidity in the solution. The closer the pH gets to zero, the more acidic it becomes. The closer it gets to 14-ish, the more alkaline it becomes. 1 is like battery acid, and 14 is like lye. That's how scientists measure the acidity after acid rainfall.
2007-03-20 16:38:20 · answer #6 · answered by spaldingpunk 3 · 0⤊ 0⤋
Ph means the solution is either acid or alkaline depending on the reading.
2007-03-20 16:38:13 · answer #7 · answered by DickyNowItAll 4 · 0⤊ 0⤋
pH is the negative log of the hydronium ion concentration of a solution. Hence a pH of 2 (i.e. 10^-2) has a higher concentration of hydronium ions than a pH of 6 (i.e. 10^-6). Hydronium ions are what chemists call free protons in a solution and they are what makes a solution more acidic.
2007-03-20 16:38:35 · answer #8 · answered by indiana_jones_andthelastcrusade 3 · 0⤊ 0⤋
pH is the degree of acidity or alkalinity of a solution where pure water is pH 7.0 (neutral): from 1 to 7 is decreasingly acidic and from 7 to 14 is increasingly alkaline (or basic).
2007-03-20 18:04:56 · answer #9 · answered by Norrie 7 · 0⤊ 0⤋
pH is a measure of the hydrogen ions in a solution and how acidic/alkaline it is. A very little known fact is that it stands for 'ponders hydrogenous'.
2007-03-21 15:56:12 · answer #10 · answered by Anonymon 4 · 0⤊ 0⤋
pH is the amount of [H+] ions in solution. The more there are the greater tha pH
pH = -log [H+] ~ (base 10)
and to moi? you can have a pH of 0. It is 1M of a fully disassociated acid or a concentration of more than 1M of a non-fully disassociated strong acid. (1M HCl has a pH= -log 1 = 0)
2007-03-20 18:10:34 · answer #11 · answered by SS4 7 · 0⤊ 0⤋