can anyone tell me waht "ph" means?
374165
PH\nFrom Wikipedia, the free encyclopedia\n \npH (potential hydrogen) is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. In aqueous systems, the hydrogen ion activity is dictated by the dissociation constant of water (Kw = 1.011 × 10−14 at 25 °C) and interactions with other ions in solution. Due to this dissociation constant a neutral solution (hydrogen ion activity equals hydroxide ion activity) has a pH of approximately 7. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values higher than 7 are considered alkaline
169778
What I think you're talking about are how acidic and how basic something is according to the pH scale.  Maybe?  \n\nWe us the pH scale to describe how acidic or how basic a solution is. pH stands for potential of hydrogen. It's numbered from 1 to 14--increasing in basicity.\n\nHydrogen and hydroxide ions are very reactive, and the proper balance of these ions is critical for the proper functioning of chemical processes within an organism.\n\nA compound that donates hydrogen ions to solutions is called an acid.  Examples of an acid would be something like lemon juice and tomato juice.  Even the gastric juice inside of your stomach.\n\nA base is a compound that accepts hydrogen ions and removes them from solutions.  Examples of a base would be something like bleach or oven cleaner.\n\nThe increasing acidity means there's a higher concentration of H+.  The decreasing basicity means there's a lower concentration of H+.  \n\nPURE WATER is neutral----or 7 on the pH scale.\n\nHope this helps. :o)
846112
corrosive=basic, \nbelow 7 on the pH scale is acidic and above is basic, \nOH- ions are basic, H+  ions are acidic, \nlitmus paper is blue when something is basic and red when something is acidic, \nand electrolytes are acidic because they contribute H pos ions in a chemical reaction.
610740
Your blood keeps its pH range stable.
455471
pH (potential hydrogen) is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. In aqueous systems, the hydrogen ion activity is dictated by the dissociation constant of water (Kw = 1.011 × 10−14 at 25 °C) and interactions with other ions in solution. Due to this dissociation constant a neutral solution (hydrogen ion activity equals hydroxide ion activity) has a pH of approximately 7. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values higher than 7 are considered alkaline..\n\npH = -log(concentration of H+)\njust use the equation to figure it out.\nhttp://en.wikipedia.org/wiki/PH
887006
pH= -log([H30+])\n\n\njust put the #'s in the above eqn.\n\nfor pOH, its pOH= -log([OH])\nand for pH given [OH], its pH= 14 - (-log([OH])
717750
Supposedly, micro combination pH electrodes can measure pH with as little as 10 microliters of sample.  I've never used one, so I can't tell you how accurate they are or how much they cost, but it might be worth looking into.
1118981
Supposedly PH balance. Most likely scents that are added, but to be honest I've used both and really haven't had a lot of differences noticed.
577726
a BASE is a proton acceptor; an ACID is a proton donator\n\nweak base - has low tendency to accept protons\nweak acid - has low tendency to donate protons - doesn't fully dissociate (reaction stays incomplete, in equilibrium)\n\n\nBuffer solutions are made up of weak acids, so an equilbrium is set up:\n\nHA  <==> H+ + A-\n(HA - acid; H+ - protons; A- - base)\n\nThe pH stays constant because, if an acid (donating H+ ions) is added, the extra A- ions will react with them to form HA. If more base is added, there are plenty of HA molecules to give up the H+ and react with them.  Therefore the amount of H+ ions in solution is constant.  Since pH is a measure of H+ ions in solution, pH stays constant too.
133368
Normal ph level is 7.35-7.45
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pH 6.5 sounds about right - it depends where you live and the degree of chlorination, etc.\n\nTry measuring it.
323248
pH = -log[H+]\n\nand\n\n[H+][OH-] = 1*10^-14\n\nwhere [ ] means concentration of.\n\n\nSo, to work out [H+], you divide 1*10^-14 by 3*10^-10 to get  3.33333*10^-5\n\nTake the -log of this, and you get 4.477.\n\nThe pH is 4.477.\n\nAll logs are in base 10.
763383
a) neutral\nb) basic\nc) basic\nd) acidic\ne) acidic if in solution\nf) basic.\n\npH is a scale ranging from 0-14.  7 is the intermediate and a pH of 7 means that the solution is neutral.  If the pH is below 7, then there are more H+ than OH- in the solution.  Hence the solution becomes acidic.  If the pH however is greater than 7, then there is less H+ than OH- in the solution and the solution is basic.\n\nFor the acid H2SO4, when in solution, it will dissociate to form H+ and SO4-.  The H+ gives the acid its acidic property.  Similarly when Ca(OH)2 is dissolved, it dissociates into Ca2+ and OH-.  The OH- gives the compound its basic property.
313595
Water... its got a pH=7
745984
To answer this question, you must know the Ka or Kb values for those acids or bases above.\nYou must then use those values to find the concentration of H+ (H30+ depending how you were taught it) or OH- ions.\nthese values can then be used to find pH or pOH depending which ion value you have.\nSimply perform the calculation \n\n-log[concentration H+ or OH-]\n\nthis will give you a pH value if you used H+ ions, or a pOH value if you used OH-. To get the pH from a pOH, you must take the value and subtract it from 14. (14-pOH = pH)
952799
"p" is defined as minus the log...pH is saying -log(H).\n\nTherefore, -log(4) = 1 x 10 to the minus 4 = .0001\n\na pH of 8 = 1 x 10 to the minus 8 = .00000001\n\nso the change in concentration is 10 to the 4 or 10,000 times
75905
From what I can find out, it appears to be slightly acid, approaching neutral, pH 5-7\n\nHow cool is that?! It's like that question was designed just for someone with my name!