Which of the following solutions has the lowest pH, assuming equal concentrations of each solution.*1 pointsulfuric acidsodium hydroxidebarium hydroxidepure water
Question
Which of the following solutions has the lowest pH, assuming equal concentrations of each solution.*1 pointsulfuric acidsodium hydroxidebarium hydroxidepure water
Solution
The solution with the lowest pH would be sulfuric acid.
Here's why:
pH is a measure of the hydrogen ion concentration in a solution. The lower the pH, the higher the concentration of hydrogen ions, and therefore, the more acidic the solution is.
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Sulfuric acid is a strong acid, which means it completely ionizes in water to produce a high concentration of hydrogen ions. This results in a very low pH.
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Sodium hydroxide and barium hydroxide are both bases, not acids. Bases have a pH greater than 7.
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Pure water is neutral, with a pH of 7.
So, out of the given options, sulfuric acid has the lowest pH.
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