Concentration of [H+] ions in a solution

In summary, when finding the concentration of H+ ions in a solution of nitric acid, you would consider both the H+ ions from the acid itself and from the dissociation of water. However, in more concentrated solutions, the contribution of H+ ions from water can be ignored. It is also important to remember that at higher concentrations, the ionic strength of the solution becomes a more significant factor.
  • #1
Trooper100
15
0
Hey guys, just a quick question:

If you have a solution of nitric acid, and if you were asked to find the concentration of H+ ions in the solution, would you find the concentration of H+ ions in the acid plus in the water?

Re-wording of question: you find the moles of H+ ions in acid + plus, then divided by total volume (if asked for molarity).
 
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  • #2
In general yes.

See pH of strong acid (base) solution.

In a diluted solution H+ from water dissociation is important, in more concentrated ones (that is, concentration higher than about 5x10-7) it can be safely ignored.

In the case of nitric acid once its concentration gets close to 1M you have to remember it is not 100% dissociated, although at this stage ionic strength of the solution plays much more important role.
 
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FAQ: Concentration of [H+] ions in a solution

What is the definition of "concentration of [H+] ions in a solution"?

The concentration of [H+] ions in a solution refers to the amount of hydrogen ions present in a given volume of the solution. It is typically measured in moles per liter (M) and is a measure of the acidity or basicity of the solution.

How is the concentration of [H+] ions calculated?

The concentration of [H+] ions can be calculated by dividing the amount of hydrogen ions (in moles) by the volume of the solution (in liters). This can also be expressed using the chemical equation [H+] = 10^-pH, where pH is the negative logarithm of the hydrogen ion concentration.

Why is the concentration of [H+] ions important in chemistry?

The concentration of [H+] ions is important in chemistry because it directly affects the chemical properties of a solution. It determines the acidity or basicity of the solution, which can impact the reactivity and behavior of other molecules within the solution.

What factors can affect the concentration of [H+] ions in a solution?

The concentration of [H+] ions can be affected by various factors, including the strength of the acid or base in the solution, the temperature, and the presence of other solutes or ions that can interact with the hydrogen ions. Additionally, the concentration of [H+] ions can also be altered through chemical reactions or dilution.

How does the concentration of [H+] ions relate to the pH scale?

The concentration of [H+] ions is directly related to the pH scale, which is a measure of the acidity or basicity of a solution. As the concentration of [H+] ions increases, the pH decreases, making the solution more acidic. Conversely, as the concentration of [H+] ions decreases, the pH increases, making the solution more basic.

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