What is the pH of hydroxylamine?

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In summary, the pH of hydroxylamine is 6.04 according to calculations using the Henderson-Hasselbalch equation with a Kb of 1.10*10^-8. However, the actual pH will depend on the concentration and using the wrong equation or using the Henderson-Hasselbalch equation for the initial pH can result in erroneous results.
  • #1
MaddenDude
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What is the pH of hydroxylamine? From my calculations, it is 6.04. But it is a base. So why is it less than 7?! For calculations I just used the Henderson-Hasselbalch equation. The Kb is 1.10*10^-8, and when 0 ml of titrant has been added, the pH would be 6.04.
 
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  • #2
MaddenDude said:
What is the pH of hydroxylamine?
That will depend on the concentration.

From my calculations, it is 6.04.
How? Care to post your "calculations" here?
 
  • #3
You've got to use the right henderson-hasselbach equation (in buffer regions), for instance, if you were to use the Kb in the acid h-h equation, you would get erroneous results.

In addition, you don't want to use the h-h equation for the initial pH, simply work with the equilibrium constant equation.
 

Related to What is the pH of hydroxylamine?

1. What is the definition of pH?

pH is a measure of the acidity or basicity of a solution. It is determined by the concentration of hydrogen ions (H+) present in a solution.

2. What is hydroxylamine?

Hydroxylamine (NH2OH) is a colorless, unstable, and highly reactive compound that is commonly used in chemical reactions as a reducing agent. It has a chemical formula of H2NOH and is made up of one nitrogen atom, one oxygen atom, and two hydrogen atoms.

3. What is the pH of hydroxylamine?

The pH of hydroxylamine is around 5-6 in water. However, the exact pH value can vary depending on the concentration and purity of the hydroxylamine solution.

4. How does hydroxylamine affect pH?

Hydroxylamine is a weak base, meaning it can accept hydrogen ions from water molecules, resulting in an increase in the concentration of hydroxide ions (OH-) and a decrease in the concentration of hydrogen ions (H+). This leads to a higher pH value in the solution.

5. What factors can influence the pH of hydroxylamine?

The pH of hydroxylamine can be influenced by its concentration, purity, and the presence of other substances in the solution. Temperature and pressure can also affect the pH of hydroxylamine solutions.

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