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By definition a neutral solution has pH or pOH of 7, and pH + pOH= 14.
The reason for pH maxing out at 14 is easiest to explain by examining what happens at low or negative pH values. Looking at what would go on at a pH of <0 to generate a pOH of >14. It is possible to calculate solutions which meet this criteria , but do they really exist?
Any acid that yields a concentration of hydrogen ions with a molarity greater than 1 will be calculated to have a negative pH. Any glass pH electrodes dipped in such a solution would exhibit 'acid error' which causes them to measure a higher pH than the real pH.
Another technical problem is that strong acids do not fully dissociate at high concentrations. Using HCl as an example some of the hydrogen would remain bound to the chlorine so the true pH would be higher than the calculated pH
Even the definition of how we calculate pH starts to fall apart. Normally pH isis calculated as -log [H+] (negative of the logarithm of the hydrogen ion molarity). This would have to be corrected to be pH = - log aH+ (negative pf the logarithm of the hydrogen ion activity) for reasons that dont need to be covered here.
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What has the highest concentration of hydroxide ion?
The highest pH on the scale is 14. But pH over 14 is also possible: for example a sample of 1o M sodium hydroxide solution has a pH of 15.
Why pH meter is till 14 Not 15 or more?
pH can most definitely go above 14. pH stands for negative logarithm of Hydrogen concetration and of course a solution could surpass 14Ph....
How can th pH of a solution be calculated if the pOH is known?
We can subtract pOH from 14, using the formula pH + pOH = 14. This is only true at 14 degrees Celsius.
What number is highest on the pH scale?
The highest number on the pH scale is 14. The pH scale goes from 0 to 14.
Substances with pH values close to 14 are strong?
A strong acid always has a pH much lower than 14.
What is the pH of maximum alkalinity?
14
What would be the pH of a basic solution?
more than 7.0
What is the pH range of solutions which are alkalis?
Alkalines, or bases, have a pH greater than 7 (maximum is 14).
What are true about the pH scale the scale ranges from 1 to 15 true or false?
pH scale is from 1 to 14 (not 15)
Why the pH lies between 0 to 14 not 15?
This is only a convention.
What has the highest concentration of hydroxide ion?
The highest pH on the scale is 14. But pH over 14 is also possible: for example a sample of 1o M sodium hydroxide solution has a pH of 15.
Why pH meter is till 14 Not 15 or more?
pH can most definitely go above 14. pH stands for negative logarithm of Hydrogen concetration and of course a solution could surpass 14Ph....
Strongest base a pH can have?
Practically pH of 14 or 15 is the highest base value reachable, due to limits of max. concentration.
What is the range for pH in chemistry?
Technically, the pH range is 0 to 14. 0 to 7 is acidic, 7 is neutral, and 7 to 14 is basic. However, in very rare situations, an acid can have a pH of -1 and a base can have a pH of 15. But I doubt you need to know that.
The strongest base would have a pH of?
Practically pH of 14 or 15 is the highest base value reachable, due to limits of max. concentration.
What is the highest number a PH can be?
The answer to this question is 14 (I believe!). This is the PH Scale: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 All these All these numbers from numbers from 7 - 14 are alkalis. 1 - 7 are acids. The middle of the PH Scale is 7; what we call Neutral (this is because it is neither Acid or Alkalis). I hope this answer helps you.
What value of pH will give a pOH value of 5?
pOH = 14 - pH 5 = 14 - pH 9 = pH
