1.

A is an aqueous acid, B is an aqueous base. They are diluted separately, then

Answer»

pH of A increases and pH of B decreases
pH of A increases and pH of B decreases till pH in each case is seven
pH of A and B increase
pH of B and A decrease

Solution :A is an aqueous acid if it is diluted molar CONCENTRATION decreases (assuming COMPLETE DISSOCIATION of acid) and pH value increases. On the otherhand if B is diluted by adding WATER molar concentration decreases, pOH value increases and pH value decreases. At very low concentration, concentration of `H^(+)` ION from `H_(2)O` should also take in consideration when pH value is calculated.


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