1.

The hydrogen ion concentration of a \[0.006\,\,M\] benzoic acid solution is \[({{K}_{a}}=6\times {{10}^{-5}})\]   [MP PET 1994]

A.                 \[0.6\times {{10}^{-4}}\]              
B.                 \[6\times {{10}^{-4}}\]
C.                 \[6\times {{10}^{-5}}\]  
D.                 \[3.6\times {{10}^{-4}}\]
Answer» C.                 \[6\times {{10}^{-5}}\]  


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