2007-05-16 14:04:00 · 6 answers · asked by serene 1 in Science & Mathematics ➔ Chemistry
Good God. Whenever I think Yahoo Answers is a good idea, I see crap answers like the ones above. The only one who was right was the first answerer.
There is nothing mysterious or mystical about the pH scale. It is just a mathematical definition for convenience's sake because acid concentrations and their chemical effects vary by such a huge margin.
Do you think 1 Molar HCl is unusual? No? That's pH = 0. Out of the bottle from the supplier, HCl is 12 Molar. That's pH = -1.1. Now, some pH meters don't work out of the 0 -14 pH range. That doesn't mean there isn't pHs out of that range.
2007-05-17 03:21:11 · answer #1 · answered by Glenguin 7 · 1⤊ 0⤋
No, you cannot have a negative pH. The scale for pH (1-14) accounts for the varying concentrations of H+. You can't have a negative concentration of anything therefore pH cannot be negative. If you have an extremely concentrated solution of acid, your pH will be near the lower end of the scale (1 or 2) or if you have a solution with very little H+ in solution it will be near the top end of the scale (13 or 14.) A solution with both OH- and H+ in relatively equal amounts, the pH will be near 7.
2007-05-16 14:14:21 · answer #2 · answered by karson178 2 · 0⤊ 1⤋
No. The pH scale goes from 1 to 14.
2007-05-16 15:56:09 · answer #3 · answered by mriveraemt 1 · 0⤊ 1⤋
The practical definition of pH is MINUS the logarithm (base-10) of the hydrogen ion concentration. Since the concentration cannot exceed 1 (whose log is 0), and concentrations < 1 have a negative log, pH cannot be negative.
2007-05-16 14:51:32 · answer #4 · answered by kirchwey 7 · 0⤊ 1⤋
don't have to give a long explanation but to my prior knowledge of chemistry pH only goes from 1-14 so there is no negative pH
2007-05-16 14:28:30 · answer #5 · answered by sensualseductionofurbandezire 1 · 0⤊ 1⤋
Yes
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2007-05-16 14:11:57 · answer #6 · answered by lcmcpa 7 · 1⤊ 0⤋