The pH value is an expression of the molarity of \( \mathrm{H}_{3} \mathrm{O}^{+} \)ions in solution. This concentration has strong impact on chemical reactions. The molarity is very small value, and therefore awkward to use. The pH scale simplifies this concentration making communication easier and faster. Demonstrate the relationship between pH and \( \mathrm{H}_{3} \mathrm{O}^{+} \)molarity, using the formula, \( \mathrm{pH}=-\log \left(\mathrm{H}_{3} \mathrm{O}^{+}\right) \) where () indicates concentration in molarity of a substance. What is the pH of a solution, having the \( \mathrm{H}_{3} \mathrm{O}^{+} \)concentration of 0.000491 M ? Add your answer

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Question 5 What is the pH of a solution, having the \( \mathrm{H}_{3} \mathrm{O}^{+} \)concentration of \( 7.06 \mathrm{e}-9 \mathrm{M} \) ? Add your answer

Este documento contiene entradas de lápiz, formas e imágenes que no son legibles en la vista para dispositi... \begin{tabular}{|l|l|l|l} 1. \( 2 p \) CONVERSIONES: Un hospital compra un frasco de alcohol isopropílico de 650 ml a \( \mathrm{S} / 0,60 \) para desinfección. Si la densidad del \\ alcohol es \( 0,75 \mathrm{~g} / \mathrm{cm}^{3} \) a temperatura ambiente, ¿cuál es el precio del alcohol por kilogramo? Equivalencia: \( 10^{3} \mathrm{~g}=1 \mathrm{~kg} \)\end{tabular}

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You can also do the reverse, calculate the \( \mathrm{H}_{3} \mathrm{O}^{+} \)molarity from the pH , using the formula \( \mathrm{H}_{3} \mathrm{O}^{+} \)molarity \( =10^{-}-\mathrm{pH} \) What is the \( \mathrm{H}_{3} \mathrm{O}^{+} \)molarity of a solution having the pH of 2.56 ?