11 Questions
What is the relationship between the concentrations of hydronium and hydroxide ions in pure water?
They are equal
What is the molar concentration of Ba+2 ions in a 0.03 M Ba(OH)2 solution?
0.06 M
What occurs when a weak acid or weak base is dissolved in water?
Partial dissociation
What does a buffer solution do when acids or bases are added to it?
No effect on pH
What is the base dissociation constant, Kb, used for?
Weak bases
What relationship do conjugate acid-base pairs have in buffer solutions?
They resist changes in pH
In a solution containing a weak acid (HA) and its conjugate base (A-), the pH can be acidic, neutral, or basic depending on what?
The concentration ratio between the acid and its conjugate base
Which equation is commonly used to calculate the pH of buffer solutions?
Henderson-Hasselbalch equation
What does Ka represent in the context of weak acids and their conjugate bases?
Equilibrium constant for the dissociation of the weak acid
For a solution that is 0.200 M in NH3 and 0.300 M in NH4Cl, what determines whether it is acidic, neutral, or basic?
Ratio between the concentrations of NH3 and NH4+
In a solution that is 0.400 M in formic acid and 1.00 M in sodium formate, what affects its pH and pOH values?
Concentration ratio between formic acid and sodium formate
Test your understanding of pH calculations with examples involving hydronium and hydroxide ion concentrations, as well as pH and pOH calculations in various solutions.
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