Ionic Product of Water and pH Calculation

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What is the equilibrium constant for water, Kw, at 25°C?

1 x 10^-12

1 x 10^-10

1 x 10^-16

1 x 10^-14 (correct)

How does the equilibrium of water shift when the temperature increases?

Towards the products (correct)

Equilibrium shifts randomly

Towards the reactants

No shift in equilibrium

Which type of equilibrium mixture do weak acids and bases form in solution?

Kinetic equilibrium

Static equilibrium

Dynamic equilibrium (correct)

Thermodynamic equilibrium

How can the pH of weak acids and bases be determined using Ka?

By taking the negative logarithm of Ka Signup and view all the answers

In which scenario would you use [HA] and [A-] along with Ka to find [H+]?

[HA] in excess Signup and view all the answers

When A- is in excess, what method should be used to find pH?

[H+] = √(Kw) Signup and view all the answers

What defines a buffer solution?

A solution that resists changes in pH when small volumes of acid or base are added Signup and view all the answers

In a buffer solution containing Ethanoic acid and Sodium Ethanoate, what happens when H+ ions are added?

The pH remains constant as H+ ions are removed by reacting with the Ethanoate ions Signup and view all the answers

What is the purpose of selecting the correct indicator in a titration process?

To change color at the endpoint of the titration Signup and view all the answers

What do acidic buffer solutions contain?

Weak acid and salt of that weak acid Signup and view all the answers

What kind of change in pH can be expected in a buffer solution when a small volume of acid is added?

Change in pH by 0.1 or 0.01 units Signup and view all the answers

How are basic buffer solutions defined?

Contain a weak base and a salt of that weak base Signup and view all the answers

What does a pH titration curve illustrate?

How the pH of a solution changes during an acid-base reaction. Signup and view all the answers

In a strong acid + weak base reaction, where does the neutralization point typically occur?

Below pH 7 Signup and view all the answers

Which indicator is commonly used for reactions with a more basic neutralization point?

Phenolphthalein Signup and view all the answers

What happens to methyl orange at the neutralization point?

Turns yellow Signup and view all the answers

In which type of acid-base reaction does the neutralization point typically occur around pH 7?

Strong Acid + Strong Base Signup and view all the answers

What is the purpose of adding alkali to an acid in a titration experiment?

To generate a more accurate titration curve Signup and view all the answers