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Nitrous acid has a Ka of 4.7x10-4. What is the pH of a buffer solution containing 0.15 M HNO2 and 0.20 M NO2?
Wiki User
∙ 8y ago
Use the Henderson-Hasselbalch equation:
[H+] = Ka * [HA] / [A-]
where
- [HA] = concentration HNO2 (acid)
and
- [A-] = concentration NO2- (base)
and
- Ka = 4.7*10-4
[H+] = Ka * [HA] / [A-] = (4.7*10-4) * (0.15) / (0.20) = 3.5*10-4 ,
so :
pH = -log[H+] = -log(3.5*10-4) = 3.45
Wiki User
∙ 8y ago
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A solution that is resistant to change in pH?
Solutions that resist change in pH when added to a strong acid or base are known as buffer solutions.
What is pseudo buffer?
a solution which does not fulfills the property of a buffer solution but act as buffer solution.
What happens when HCl is mixed with a solution that is not a buffer solution?
If the solution is not a buffer, the HCl will react with the solution to form a product.
What can destroy buffer solution?
The buffer solution is destroyed if the amount of acid or base that can be absorbed is exceded.
What can be mixed in solution with H2CO3 to make a buffer?
H2CO3 is not used as buffer.
What is the word for a solution containing either a weak acid and its salt or a weak base and its salt?
A buffer
A solution that is resistant to change in pH?
Solutions that resist change in pH when added to a strong acid or base are known as buffer solutions.
What is pseudo buffer?
a solution which does not fulfills the property of a buffer solution but act as buffer solution.
What is chemical equation when a strong acid is added to a buffer solution containing NaF and HF?
HCl + NaF -> HF + NaCl
What happens when HCl is mixed with a solution that is not a buffer solution?
If the solution is not a buffer, the HCl will react with the solution to form a product.
What can destroy buffer solution?
The buffer solution is destroyed if the amount of acid or base that can be absorbed is exceded.
What is TNE buffer?
tris, EDTA (TE solution) and NaCl, TNE buffer is a buffer solution used in molecular biology, especially for DNA and RNA
What is the purpose of buffer?
Buffer Resist and Maintains the PH of the solution if there change in the environment of the solution.
What is sorensens buffer?
Phosphate buffered saline is a buffer solution commonly used in biological research. It is a water-based salt solution containing sodium phosphate, sodium chloride and, in some formulations, potassium chloride and potassium phosphate. The osmolarity and ion concentrations of the solutions match those of the human body.
Can be mixed in a solution with H2CO3 to make a buffer?
H2CO3 is not used as buffer.
When a base is added to a buffer solution the buffer will?
donate H+ ions
How you classify the solution as a best buffer solution?
A buffer solution is one involving a weak base/weak acid with its conjugate acid/base. In a buffer solution, the pH must be changed to only a small amount. Thus, any solution with a STRONG acid or a STRONG base is not a successful buffer solution because there would be a relatively large change in the initial pH.
