1.Does a pH of 8.6 describe a solution with a higher or lower hydronium ion concentration
compared to a neutral solution? Is such as solution called acidic or basic?
2. Compared to a neutral solution, would you expect an acidic solution to have a higher or
lower pH and a higher or lower hydronium ion concentration?
3. How is the definition of pOH analogous to the definition of pH?
1. To determine whether a solution with a pH of 8.6 has a higher or lower hydronium ion concentration compared to a neutral solution, you can use the pH scale. The pH scale ranges from 0 to 14, with 7 being considered neutral. A pH value greater than 7 indicates a basic solution.
To understand the hydronium ion concentration, we can use the equation pH = -log[H3O+], where [H3O+] represents the concentration of hydronium ions in moles per liter. In this case, a pH of 8.6 means that the hydronium ion concentration is 10^-8.6 M.
Since 10^-8.6 is greater than 10^-7 (the concentration in a neutral solution), the solution with a pH of 8.6 has a higher hydronium ion concentration compared to a neutral solution. Therefore, it is considered basic.
2. An acidic solution has a pH value less than 7. Lower pH values indicate higher hydronium ion concentrations. Therefore, compared to a neutral solution, an acidic solution would have a lower pH and a higher hydronium ion concentration.
3. The definition of pOH is analogous to the definition of pH. While pH measures the concentration of hydronium ions in a solution, pOH measures the concentration of hydroxide ions. The pOH scale also ranges from 0 to 14, with 7 being neutral.
Similar to pH, pOH is calculated using the equation pOH = -log[OH-], where [OH-] represents the concentration of hydroxide ions.
The relationship between pH and pOH is described by the equation pH + pOH = 14. Therefore, if you know the pH, you can use this equation to find the pOH, and vice versa. Both pH and pOH provide information about the acidity or basicity of a solution, with pH focusing on hydronium ions and pOH focusing on hydroxide ions.