AP Chemistry Unit 8 Acids/Bases/Buffers Exam

Will this be a buffer:

1 mol HCl and 1 mol NaOH

• Yes, it is a weak acid/base and its conjugate

• Yes, it will form a weak acid/base and its conjugate

• No, it contains only a strong acid/base and its conjugate

• No, it will form a neutral salt

• Not really, it will be predominately a weak acid/base or a weak conjugate

Will this be a buffer:

1 mol of HF and 1 mol NaF

• Yes, it is a weak acid/base and its conjugate

• Yes, it will form a weak acid/base and its conjugate

• No, it contains only a strong acid/base and its conjugate

• No, it will form a neutral salt

• Not really, it will be predominately a weak acid/base or a weak conjugate

Will this be a buffer:

1 mol of CH₃COOH and 0.5 mol NaOH

• Yes, it is a weak acid/base and its conjugate

• Yes, it will form a weak acid/base and its conjugate

• No, it contains only a strong acid/base and its conjugate

• No, it will form a neutral salt

• Not really, it will be predominately a weak acid/base or a weak conjugate

Will this be a buffer:

1 mol of CH₃COOH and 1 mol NaOH

• Yes, it is a weak acid/base and its conjugate

• Yes, it will form a weak acid/base and its conjugate

• No, it contains only a strong acid/base and its conjugate

• No, it will form a neutral salt

• Not really, it will be predominately a weak acid/base or a weak conjugate

Will this be a buffer:

1 mol of HClO₄ and 1 mol NaClO₄

• Yes, it is a weak acid/base and its conjugate

• Yes, it will form a weak acid/base and its conjugate

• No, it contains only a strong acid/base and its conjugate

• No, it will form a neutral salt

• Not really, it will be predominately a weak acid/base or a weak conjugate

Will this be a buffer:

1 mol of CH₃NH₂ and 1 mol CH₃NH₃⁺

• Yes, it is a weak acid/base and its conjugate

• Yes, it will form a weak acid/base and its conjugate

• No, it contains only a strong acid/base and its conjugate

• No, it will form a neutral salt

• Not really, it will be predominately a weak acid/base or a weak conjugate

Will this be a buffer:

1 mol of HCOOH

• Yes, it is a weak acid/base and its conjugate

• Yes, it will form a weak acid/base and its conjugate

• No, it contains only a strong acid/base and its conjugate

• No, it will form a neutral salt

• Not really, it will be predominately a weak acid/base or a weak conjugate

What will be the pH if this salt is added to water:

KI

• pH = 7

• pH > 7

• pH < 7

What will be the pH if this salt is added to water:

NaCH₃COO

• pH = 7

• pH > 7

• pH < 7

What will be the pH if this salt is added to water:

NaNO₃

• pH = 7

• pH > 7

• pH < 7