Chemistry Practice Problems Strong Acid-Base Calculations Practice Problems Solution: What is the pH of 252.185 mL of a 3.52 x 10 -4 M H...

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Solution: What is the pH of 252.185 mL of a 3.52 x 10 -4 M HClO3 solution?A. 4.05B. 10.55C. 2.82D. 3.45E. the pH can't be calculated without the value of K a

Problem

What is the pH of 252.185 mL of a 3.52 x 10 -4 M HClO3 solution?

A. 4.05

B. 10.55

C. 2.82

D. 3.45

E. the pH can't be calculated without the value of K a

Solution

Remember that HClO3 is a strong, monoprotic oxyacid. It’s a strong oxyacid since there are 2 more O than H in the formula.


Recall that strong acids completely dissociate in water and that acids donate H+ to the base (water in this case). The dissociation of HClO4 is as follows:


HClO3(aq) + H2O(l)  H3O+(aq) + ClO3(aq)


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