why PH scale range is 14? why it is not less or not greater
than 14? solution of HCl or hydrogen containing liquid has
a PH. but if the solution is KMnO4 here not hydrogen power
does it PH? explain plz....

Answer Posted / sachin

This is the scale to measure the concentration (activity) of H+ Ions in solution which is -log[H+] convenient for our usage

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