How much water is required to convert 1 litre of an aqueous solution of HNO3having a pH value of 2 into an aqueous solution of HNO3with a pH value of 3?..pls explainn clearly

Dear Student,

HNO3 is a strong acid and therefore, [HNO3]  [H+]Now, pH=-log[H+]If pH = 2then. -log[H+]=2or, [H+]=10-2 = [HNO3]So now, concentration of HNO3] is 10-2. Let it be C1when pH=3-log[H+]=3or, [H+]=10-3=[HNO3]Let this concentration be C2.Applying C1V1=C2V2V1= 1 LTherefore, (10-2)(1)=(10-3)(V2)or, V2=10-210-3= 10 LTherefore, the volume of the solution has to be made 10 L from 1 L. Amount of water required = 10-1=9 L

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