Review Consiants | Penit Part A What is the pH of an aqueous solution with (H3O*] =2×10-14 M? Express the pH numerically using one decimal place. > View Available Hint(s) ? PH = Submit Part B Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of H3O* in a cola that has a pH of 3.120? Express your answer with the appropriate units. • View Available Hint(s) ?
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![<Chapters 5, 8, 9 ,10 in a nutshell
+ Key Math Skill: Calculating pH and the Hydronium lon Concentration
44 of 50
>
I Review | Constants | Periodic Table
Learning Goal:
Part A
To calculate pH and use it as a measure of acidity.
The pH expresses the molar concentration of hydronium ions in an
aqueous solution on a logarithmic scale:
What is the pH of an aqueous solution with [H30+] =2x10-14 M?
Express the pH numerically using one decimal place.
pH = -log[H3O+]
• View Available Hint(s)
[H3O+] = 10-pH
As pH decreases, acidity increases. As pH increases, acidity
decreases.
• Acidic solution: pH < 7
• Neutral solution: pH = 7
• Basic solution: pH >7
pH =
Submit
Part B
Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid.
What is the molar concentration of H3O+ in a cola that has a pH of 3.120?
Express your answer with the appropriate units.
• View Available Hint(s)
[H3O*] =
Value
Units
Submit](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F18aea133-e89a-46b3-a739-31e710ff6855%2Fcfbba5ce-cdcd-417c-91f2-00c01aecb879%2F28lw33i_processed.png&w=3840&q=75)
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