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In Step 5, you will calculate H+/OH– ratios for more extreme pH solutions. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide for a solution at a pH = 2. Then divide the H+ concentration by the OH– concentration. Record these concentrations and ratio in Table C.
What is the concentration of H+ ions at a pH = 2?
0.01 mol/L
What is the concentration of OH– ions at a pH = 2?
0.000000000001 mol/L
What is the ratio of H+ ions to OH– ions at a pH = 2?
10,000,000,000 : 1
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At pH 2, the hydrogen ion concentration at pH 2 is 0.01 mol/L. The hydroxide ion concentration at pH 2 is [tex]\rm 1\;\times\;10^-^1^2[/tex] mol/L. The ratio of hydrogen ion concentration to hydroxide ion concentration is [tex]\rm 1\;\times\;10^1^0[/tex].
pH can be described as the logarithmic value of the concentration of the hydrogen ion in a solution.
pH can be calculated as:
pH = log [tex]\rm [H^+][/tex]
[tex]\rm [H^+][/tex] = [tex]\rm 10^-^p^H[/tex]
The concentration of hydrogen ions at pH 2 will be:
[tex]\rm [H^+][/tex] = [tex]\rm 10^-^2[/tex]
The hydrogen ion concentration at pH 2 will be 0.01 mol/L.
The pH of the solution is 2.
Thus the pOH of the solution will be:
pH + pOH = 14
2 + pOH = 14
pOH = 12
pOH = [tex]\rm log[OH^-][/tex]
[tex]\rm [OH^-]\;=\;10^-^p^O^H[/tex]
The hydroxide ion concentration at pH 2 will be:
[tex]\rm [OH^-]\;=\;10^-^1^2[/tex]
The hydroxide ion concentration at pH 2 will be [tex]\rm 1\;\times\;10^-^1^2[/tex] mol/L.
The ratio of hydrogen ion concentration to hydroxide ion concentration will be:
[tex]\rm \dfrac{[H^+]}{[OH^-]}\;=\;\dfrac{0.01}{10^-^1^2}[/tex]
The ratio of hydrogen ion concentration to hydroxide ion concentration is [tex]\rm 1\;\times\;10^1^0[/tex].
At pH 2, the hydrogen ion concentration at pH 2 is 0.01 mol/L. The hydroxide ion concentration at pH 2 is [tex]\rm 1\;\times\;10^-^1^2[/tex] mol/L. The ratio of hydrogen ion concentration to hydroxide ion concentration is [tex]\rm 1\;\times\;10^1^0[/tex].
For more information about the pH, refer to the link:
https://brainly.com/question/491373
