why ph scale is not more than 14
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Answered by
2
14 pH is very basic . more than 14 is not possible in the nature
ahmedmandaviya:
but what's the reason behind it
its magic of natue . i can't explain it
The pH scale is limited on the low end by the highest concentration (activity) of [H+] in solution. On a practical level this is something like 20M or pH=-log[H+]=log[20]=-1.3. The upper end of the pH scale is limited by the lowest concentration (activity) of [H+] in solution. In aqueous solution the autoionization of water limits this value according to 14=pOH+pH.
This is your answer @ahmexmandaviya
thnk u soo much @neha09143
welcome dear... ^__^
Answered by
5
Hi dear...
Here is your answer ...
➖ The pH scale is limited on the low end by the highest concentration (activity) of [H+] in solution.
➖ On a practical level this is something like 20M or pH=-log[H+]=log[20]=-1.3. The upper end of the pH scale is limited by the lowest concentration (activity) of [H+] in solution.
➖ In aqueous solution the autoionization of water limits this value according to 14=pOH+pH.
⚫ For example the solubility of sodium hydroxide in water is about 111g/100mL or about 27M. pOH=-1.4 so pH=15.4.
➖ Note that the pH of non-aqueous solutions can exceed the -1.3–15.4 range I illustrated.
➖ On a practical level it is not straightforward to measure a pH outside the 1-13 range.
➖ Certainly a standard pH electrode will not be accurate.
Hope this will help you...
Here is your answer ...
➖ The pH scale is limited on the low end by the highest concentration (activity) of [H+] in solution.
➖ On a practical level this is something like 20M or pH=-log[H+]=log[20]=-1.3. The upper end of the pH scale is limited by the lowest concentration (activity) of [H+] in solution.
➖ In aqueous solution the autoionization of water limits this value according to 14=pOH+pH.
⚫ For example the solubility of sodium hydroxide in water is about 111g/100mL or about 27M. pOH=-1.4 so pH=15.4.
➖ Note that the pH of non-aqueous solutions can exceed the -1.3–15.4 range I illustrated.
➖ On a practical level it is not straightforward to measure a pH outside the 1-13 range.
➖ Certainly a standard pH electrode will not be accurate.
Hope this will help you...
:-)
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