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pH Calculations Examples

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Questions and Answers

What is the relationship between the concentrations of hydronium and hydroxide ions in pure water?

Hydronium ions are higher

Hydroxide ions are higher

They are dependent on temperature

They are equal (correct)

What is the molar concentration of Ba+2 ions in a 0.03 M Ba(OH)2 solution?

0.06 M (correct)

0.015 M

0.09 M

0.03 M

What occurs when a weak acid or weak base is dissolved in water?

No dissociation

Partial dissociation (correct)

Full dissociation

Neutralization

What does a buffer solution do when acids or bases are added to it?

No effect on pH Signup and view all the answers

What is the base dissociation constant, Kb, used for?

Weak bases Signup and view all the answers

What relationship do conjugate acid-base pairs have in buffer solutions?

They resist changes in pH Signup and view all the answers

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 Signup and view all the answers

Which equation is commonly used to calculate the pH of buffer solutions?

Henderson-Hasselbalch equation Signup and view all the answers

What does Ka represent in the context of weak acids and their conjugate bases?

Equilibrium constant for the dissociation of the weak acid Signup and view all the answers

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+ Signup and view all the answers

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 Signup and view all the answers

pH Calculations Examples

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Questions and Answers

What is the relationship between the concentrations of hydronium and hydroxide ions in pure water?

What is the molar concentration of Ba+2 ions in a 0.03 M Ba(OH)2 solution?

What occurs when a weak acid or weak base is dissolved in water?

What does a buffer solution do when acids or bases are added to it?

What is the base dissociation constant, Kb, used for?

What relationship do conjugate acid-base pairs have in buffer solutions?

In a solution containing a weak acid (HA) and its conjugate base (A-), the pH can be acidic, neutral, or basic depending on what?

Which equation is commonly used to calculate the pH of buffer solutions?

What does Ka represent in the context of weak acids and their conjugate bases?

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?

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?

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