Podcast
Questions and Answers
What does H2O molecule do in pure water according to the text?
What does H2O molecule do in pure water according to the text?
- Can both donate and accept a proton simultaneously (correct)
- Remains unchanged and does not participate in any reactions
- Accepts a proton and acts as a base
- Donates a proton and acts as an acid
Which ratio can be used to represent the dissociated water to undissociated water?
Which ratio can be used to represent the dissociated water to undissociated water?
- $10^{-9} / 55.55$
- $10^{-7} / 1000$
- $10^{-5} / 55.55$
- $10^{-7} / 55.55$ (correct)
What distinguishes acidic, neutral, and basic aqueous solutions?
What distinguishes acidic, neutral, and basic aqueous solutions?
- [H3O+] varies independently of [OH-]
- [H3O+] > [OH-] (correct)
- [H3O+] = [OH-]
- [H3O+] < [OH-]
How is the pH of a solution defined?
How is the pH of a solution defined?
What is the relationship between activity and molarity of hydrogen ions?
What is the relationship between activity and molarity of hydrogen ions?
In a basic aqueous solution, how do [H3O+] and [OH-] concentrations compare?
In a basic aqueous solution, how do [H3O+] and [OH-] concentrations compare?
Why is measurement of pH essential when dealing with biological and cosmetic applications?
Why is measurement of pH essential when dealing with biological and cosmetic applications?
What is the equilibrium towards in pure water?
What is the equilibrium towards in pure water?
How is the hydronium ion concentration more conveniently expressed?
How is the hydronium ion concentration more conveniently expressed?
What determines whether a solution is acidic, neutral, or basic?
What determines whether a solution is acidic, neutral, or basic?
Why is the pH scale preferred over direct molarity measurements for hydrogen ions?
Why is the pH scale preferred over direct molarity measurements for hydrogen ions?
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