1.

In a mixture of a weak acid and its salt, the ratio of concentration of acid to salt is increased ten-fold. The \[pH\] of the solution                                                [KCET 1996]

A.                 Decreases by one           
B.                 Increases by one-tenth
C.                 Increases by one             
D.                 Increases ten-fold
Answer» B.                 Increases by one-tenth


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