What does 'log M' means? It is the unit for molar concentration, but why it is 'log'? Proper answer needed.?

When larger number with larger exponentials are involved it is more appropriate to represent them in the log scale.

It just means logarithm of the M.

Simply M would be the right answer, but it wud be huge...

puttin it in log gives a decent figure

I apologize but the logarithm of a number has NO dimension

when you write log M it is logarithm base 10 of number M but this number is only a number

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