15 Questions
What is the term used to describe the self-ionization of water?
Autoionization
In the autoionization of water, what ions are formed in a 1:1 molar ratio?
Hydronium and hydroxide ions
What happens to the concentrations of hydronium and hydroxide ions in pure water?
They are equal
How is a molecule acting as an acid defined in relation to proton donation?
Donates a proton to another molecule
What is the molar ratio of hydronium and hydroxide ions when water undergoes autoionization?
1:1
What does the autoionization constant help determine in aqueous solutions?
Concentrations of hydronium and hydroxide ions
In what form do hydronium and hydroxide ions exist in pure water compared to non-ionized water?
In extremely small concentrations
What is the common name used to refer to the dissociation constant, as mentioned in the text?
Kw constant
At 25 degrees C, the concentration of hydronium ions in pure water is approximately:
$10^{-7}$ M
What is the negative logarithm of the Kw constant?
$-14$
In the pH scale, what does a high pH value indicate?
High hydroxide ion concentration
When a solution becomes more acidic, what happens to the concentration of hydronium ions?
Increases
Which principle describes the shift in equilibrium when an acid is added to pure water?
Le Chatelier's principle
What happens to the product of hydronium and hydroxide ions concentrations in acidic solutions compared to pure water?
Becomes less than Kw
"p" represents the negative logarithm of:
$[H_3O^+]$
Learn about the process of autoionization of water, where water molecules can act as both acids and bases, reacting with each other to form hydronium and hydroxide ions. Understand how water ionizes itself and the concept of amphoteric compounds.
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