Buffer Systems in Chemistry

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What happens to the pH of a buffer solution if the pH is greater than the pKa value?

pH becomes equal to pKa

pH increases

pH decreases (correct)

pH remains constant

In a high (basic) environment, what is the state of ionization compared to unionization?

IONIZED > UN-IONIZED (correct)

IONIZED = UN-IONIZED

Not enough information to determine

IONIZED < UN-IONIZED

What percentage of molecules are ionized in a high (basic) environment?

50%

100%

75% (correct)

25%

What is the property of a molecule that can cross a lipid membrane?

Low pKa Signup and view all the answers

If the pH of a buffer solution is less than the pKa value, what happens to the pH?

pH increases Signup and view all the answers

In a buffer system with a pH greater than the pKa value, what is the percentage of ionized molecules?

Greater than 50% Signup and view all the answers

What happens to the pH of a buffer solution when it has a pH lower than the pKa value?

It decreases Signup and view all the answers

In which environment can molecules cross a lipid membrane?

Basic environment Signup and view all the answers

If a molecule is more than 50% ionized, what can be said about its state of unionization?

Less than 50% unionized Signup and view all the answers

What is the relationship between the pH and pKa in a buffer system for the lipophilic property of a molecule?

pH < pKa Signup and view all the answers

What is the relationship between ionization and unionization in a buffer system with a pH greater than the pKa value?

More than 50% ionized and less than 50% unionized Signup and view all the answers

What is the likelihood of a molecule to cross a lipid membrane if it is more than 50% ionized?

Cannot cross the lipid membrane Signup and view all the answers

In a high (basic) environment, what happens to the percentage of ionized molecules?

Increases Signup and view all the answers

What occurs to a buffer solution's pH if it is less than the pKa value?

Decreases Signup and view all the answers

Which statement accurately describes the ability of molecules to cross a lipid membrane?

Unionized molecules cannot cross the lipid membrane Signup and view all the answers

Buffer Systems in Chemistry

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