10 Questions
What is the role of water in cellular functions?
To maintain the pH balance in cells
How can weak acids contribute to the hydrogen ion concentration in a solution?
By donating hydrogen ions through ionization
What can be used to describe the position of equilibrium of any chemical reaction?
Equilibrium constant
Which ions are yielded through the reversible ionization of water?
Hydrogen ions (H+) and hydroxide ions (OH− )
What is expressed as the pH of a solution?
Total hydrogen ion concentration
What is the equilibrium constant for the reversible ionization of water at 25°C?
1.8 × 10−16 M
How is the pH of a solution defined?
As the negative logarithm of the concentration (in moles/litre) of hydrogen ions
What does it mean when the solution is said to be at neutral pH?
The concentration of (H+ ) and (OH− ) are exactly equal
What does the ion product of water, Kw, define?
The actual concentration of ( H+ )(and thus of OH−) in any aqueous solution
How is the pH scale defined?
A scale for expressing the (H+ ) concentration in moles/litre
Test your knowledge on the ionization of water, weak acids, and body buffers with this quiz. Explore the concepts of solvent properties of water, ionization equilibrium, and the role of weak acids and bases in maintaining acid-base balance.
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