Question

Identify a good buffer. A) A significant amounts of both a weak acid and its conjugate...

Identify a good buffer.

A) A significant amounts of both a weak acid and its conjugate base

B) SIgnificant amounts of both a strong acid and a strong base

C) Small amounts of both a weak acid and its conjugate base

D) Significant amounts of both a weak acid and a strong base

E) SMall amounts of both a strong acid and a strong base.

I know the correct answear is A but why it A correct while the others are wrong. Could someone explain to me why B-E are the wrong answears?

Homework Answers

Answer #1

acidic buffer is formed by weak acid and its conjugate base
basic buffer is formed by weak base and its conjugate acid

option B,D,E are ruled out since they are not even forming buffer

Now we need to decide between A and C
If amount are present in small quantity, sall amount of base will react with this acid and pH will change. So it will not be a good buffer since whole concept of buffer is to now allow change in pH. So option C is also not going to work

Answer: A

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A buffer contains significant amounts of a weak acid and a salt containing its conjugate base....
A buffer contains significant amounts of a weak acid and a salt containing its conjugate base. The acid consumes any added base, and the base consumes any added acid. In this way, a buffer resists pH change. Strong acids, strong bases, two bases, or two acids cannot form a buffer on their own. Part A Which set of compounds would form a buffer in aqueous solution? HF and KCN HCl and KCl NaCl and KCl NaBr and KBr HCOOH and...
A buffer contains significant amounts of a weak acid and its conjugate base. The acid consumes...
A buffer contains significant amounts of a weak acid and its conjugate base. The acid consumes any added base, and the base consumes any added acid. In this way, a buffer resists pH change. Part A Which set of compounds would form a buffer in aqueous solution? NaF and NaOH NaF and KF HCN and NaCN HF and KF HCl and HClO HBr and NaBr HF and KCN NaCl and KCl Please say if they are a buffer or not...
When a solution contains a weak acid and its conjugate base or a weak base and...
When a solution contains a weak acid and its conjugate base or a weak base and its conjugate acid, it will be a buffer solution. Buffers resist change in pH following the addition of acid or base. A buffer solution prepared from a weak acid (HA) and its conjugate base (A−) is represented as HA(aq)⇌H+(aq)+A−(aq) The buffer will follow Le Châtelier's principle. If acid is added, the reaction shifts to consume the added H+, forming more HA. When base is...
A buffer is a mixed solution of a weak acid or base, combined with its conjugate....
A buffer is a mixed solution of a weak acid or base, combined with its conjugate. Note that this can be understood essentially as a common-ion problem: The conjugate is a common ion added to an equilibrium system of a weak acid or base. The addition of the conjugate shifts the equilibrium of the system to relieve the stress of the added concentration of the common ion. In a solution consisting of a weak acid or base, the equilibrium shift...
A buffer contains equal concentrations of a weak base, B, and its conjugate acid, BH+. If...
A buffer contains equal concentrations of a weak base, B, and its conjugate acid, BH+. If the value of Kb for B is 1.0 x 10-9, what is the pH of the buffer? A. 13.0 B. 9.0 C. 1.0 D. 7.0 E. 5.0 Please show your work. Thank you.
When a solution contains a weak acid and its conjugate base or a weak base and...
When a solution contains a weak acid and its conjugate base or a weak base and its conjugate acid, it will be a buffer solution. Buffers resist change in pH following the addition of acid or base. A buffer solution prepared from a weak acid (HA) and its conjugate base (A−) is represented as HA(aq)⇌H+(aq)+A−(aq) The buffer will follow Le Châtelier's principle. If acid is added, the reaction shifts to consume the added H+, forming more HA. When base is...
Design a buffer that has a pH of 3.73 using one of the weak acid/conjugate base...
Design a buffer that has a pH of 3.73 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa HC2O4- C2O42- 6.4 × 10-5 4.19 H2PO4- HPO42- 6.2 × 10-8 7.21 HCO3- CO32- 4.8 × 10-11 10.32 How many grams of the sodium salt of the weak acid must be combined with how many grams of the sodium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M...
Design a buffer that has a pH of 6.66 using one of the weak acid/conjugate base...
Design a buffer that has a pH of 6.66 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa HC2O4- C2O42- 6.4×10-5 4.19 H2PO4- HPO42- 6.2×10-8 7.21 HCO3- CO32- 4.8×10-11 10.32 How many grams of the potassium salt of the weak acid must be combined with how many grams of the potassium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams potassium...
Design a buffer that has a pH of 6.65 using one of the weak acid/conjugate base...
Design a buffer that has a pH of 6.65 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa HC2O4- C2O42- 6.4×10-5 4.19 H2PO4- HPO42- 6.2×10-8 7.21 HCO3- CO32- 4.8×10-11 10.32 How many grams of the sodium salt of the weak acid must be combined with how many grams of the sodium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams sodium...
1)Design a buffer that has a pH of 10.12 using one of the weak base/conjugate acid...
1)Design a buffer that has a pH of 10.12 using one of the weak base/conjugate acid systems shown below. Weak Base Kb Conjugate Acid Ka pKa CH3NH2 4.2×10-4 CH3NH3+ 2.4×10-11 10.62 C6H15O3N 5.9×10-7 C6H15O3NH+ 1.7×10-8 7.77 C5H5N 1.5×10-9 C5H5NH+ 6.7×10-6 5.17 How many grams of the bromide salt of the conjugate acid must be combined with how many grams of the weak base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams bromide...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT