Editing PH Calculation Problem Set 2
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<center><b>pH Calculation Problem Set 2: Strong Acid and Base Only</b></center><br> Answer the following showing all work, equations, units, etc. <b>Be sure to show the chemical reaction for each problem (if available).</b><br> <br> 1. What is the sulfuric acid, H<sub>2</sub>SO<sub>4</sub>, concentration of a solution with pH = 4.21.<br> <br> <br> <br> <br> <br> <br> 2. What is the barium hydroxide concentration of a solution with a pH = 9.35?<br> <br> <br> <br> <br> <br> <br> 3. What is the hydronium ion concentration of a solution with a pH of 12.4?<br> <br> <br> <br> <br> <br> <br> 4. What is the pOH of a 4.23E-2M nitric acid, HNO<sub>3</sub>, solution?<br> <br> <br> <br> <br> <br> <br> 5. You have calculated the H<suP>+</sup> concentration of the sulfuric acid solution in Question 1. This concentration does not include the H<sup>+</sup> concentration from the autoionization of water (about 1.0E-7M for [H<sup>+</sup>] or [OH<sup>1-</sup>]). Explain why (including some addition and sig figs) we do not usually include this H<sup>+</sup> concentration contribution when we calculate pH.<br> <br> <br> <br> <br> <br> <br> <P style="page-break-before: always"> Answer: 1)3.1E-5M 2)1.1E-5M 3)4E-13M 4)p<nowiki>OH</nowiki>=12.626 5) [H<sup>+</sup>] from acid >>> [H<sup>+</sup>] from water <br>
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