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Aqueous solution of HCL is diluted by fuve times. What will be thr change in pH?

Aqueous solution of HCL is diluted by fuve times. What will be thr change in pH? 

Grade:12

1 Answers

Naveen Kumar
askIITians Faculty 60 Points
9 years ago
As we know, pH=-log[H+]
let initailly, [H+]=x, So pH=-log[H+]=-logx
after diluting the acid 5 times, the concentration of [H+]=x/5, Hence pH=-log[H+]
.............................................................................=-log(x/5)=-logx+log5=-logx+0.7
So change in pH=0.7

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