n :  the cologarithm of the dissociation constant K or -log K that serves as a convenient measure of the strength of an acid <K for acetic acid is 0.000018 or l.8 × 10^-5 from which pK is (5 - 0.25) or 4.75>  - compare PH  .
n :  PSYCHOKINESIS .
 
 
 
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