Editing CP PH Calculations
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Answer the following question the equation pH = - log [H<sup>+</sup>]<br> <br> a) Remember if you are given or need to find Molarity (M) of the acid molecule not [H<sup>+</sup>], you will need to write the reaction on the Reaction line and do stoichiometry as part of answer.<br> b) If you are given [H<sup>+</sup>] or pH and looking for opposite, then you do not need to write a reaction so <b>write N/A on Reaction line</b><br> <br> <br> 1. What is the pH of a solution with [H<sup>+</sup>] = 3.2E-1 M ? Reaction: _________________________<br> <br> <br> <br> <br> <br> <br> <br> 2a. What is the [H<sup>+</sup>] (called hydronium ion concentration) of 4.25E-3 M HNO<sub>3</sub> solution (called _________ solution)?<br> <br> Reaction : __________________________________________________<br> <br> <br> <br> 2b) What is the pH of that solution?<br> <br> <br> <br> 3a. What is the [H<sup>+</sup>] (called hydronium ion concentration) of 5.25E-5 M H<sub>2</sub>SO<sub>4</sub> solution (called ______________ acid solution)?<br> <br> Reaction : __________________________________________________<br> <br> <br> <br> 3b) What is the pH of that solution?<br> <br> <br> <br> 4. What is the pH of a 9.02E-8M HCl solution (called _______________________ acid solution).<br> <br> Reaction : ___________________________________________ <br> <br> <br> <br> <br> <br> <br> <br> Answers:<br> 1) pH = 0.49, No reaction needed<br> 2a) 4.25E-3M, Nitric acid, Reaction 1 HNO<sub>3</sub> --> 1 H<sup>1+</sup> + 1 NO<sub>3</sub><sup>1-</sup><br> 2b) pH = 2.37 (actually pH = 2.372)<br> <br> 3a) 1.05E-4M, Sulfuric acid, Reaction 1 H<sub>2</sub> SO<sub>4</sub> --> 2 H<sup>1+</sup> + 1 SO<sub>4</sub><sup>2-</sup><br> 3b) pH = 3.97 (actually pH = 3.979)<br> <br> 4) Hydrochloric acid, 1 HCl --> 1 H<sup>1+</sup> + 1 Cl<sup>1-</sup>, pH = 7.04 (actually pH = 7.045)<br> <br>
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