Recall that ** strong acids** completely dissociate in water and that

The pH of a solution is given by:

$\overline{){\mathbf{pH}}{\mathbf{=}}{\mathbf{-}}{\mathbf{log}}{\mathbf{}}\mathbf{\left[}{\mathbf{H}}_{\mathbf{3}}{\mathbf{O}}^{\mathbf{+}}\mathbf{\right]}}$

where [H_{3}O^{+}] = hydronium ion concentration.

**For (a) 0.16 M HCl**

Calculate the pH of each of the following solutions of a strong acid in water.

(a) 0.16 *M* HCl

(b) 4.4 *M* HClO_{4}

(c) 2.3 x 10^{-11} *M* HI

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