The ph of a solution decreases by 2.0. how does the hydronium ion concentration of the solution change?

increases to 2 times the original concentration
increases to 100 times the original concentration
decreases to 1/100 of the original concentration
decreases to 1/2 of the original concentration

The correct answer is 'increases to 100 times the original concentration'.

Explanation:

let the initial pH be x

The original concentration of initially present be y

...(1)

Final concentration of when pH reduced by 2 be z

...(2)

Putting the value of 'x' from (1) into (2) we get :

When pH of a solution decreases by 2.0, hydronium ion concentration of the solution increases to 100 times the original concentration

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