Solving pH with [H+] = 1 * 10^-5 mol/L

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In summary, pH is a measure of the acidity or basicity of a solution and is calculated using the negative logarithm of the hydrogen ion concentration, [H+]. A higher [H+] concentration results in a lower pH and a more acidic solution, while a lower [H+] concentration leads to a higher pH and a more basic solution. [H+] = 1 * 10^-5 mol/L represents a neutral concentration on the pH scale and a balance between acidity and basicity. Changing the [H+] concentration directly affects the pH of a solution, with higher [H+] concentrations resulting in lower pH and more acidity, and lower [H+] concentrations resulting in higher pH and more basicity.
  • #1
WingZero
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Help me with ph

pH = -log[H+]

Express the following concentrations in terms of pH.

[H+] = 1 * 10^-5 mol/L
 
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  • #2
It's right in front of you. You have the molar concentration for [H+], now just plut it into the equation.

-log(10^-5) = pH = 5

Remember: [OH-][H+] = 10^-14

You will probably need this later on. This is where the lograrithmic pH scale comes from and why it "supposedly" goes from 0-14, although you can have negative pH's with strong enough concentrations.

Now maybe you can solve my problem in the thread "balance the equation"! heh
 
  • #3


pH = -log(1 * 10^-5 mol/L)
pH = -log(1) + log(10^-5)
pH = -0 + (-5)
pH = -5

Therefore, the pH of a solution with [H+] = 1 * 10^-5 mol/L is 5.
 

What is pH and how is it related to [H+] concentration?

pH is a measure of the acidity or basicity of a solution. It is defined as the negative logarithm of the hydrogen ion concentration, [H+]. In other words, the higher the [H+] concentration, the lower the pH and the more acidic the solution is. Conversely, a lower [H+] concentration results in a higher pH and a more basic solution.

What does [H+] = 1 * 10^-5 mol/L mean?

This notation represents the concentration of hydrogen ions in a solution. In this case, it means that for every liter of the solution, there are 1 * 10^-5 moles of hydrogen ions present. This concentration is often used in scientific calculations and is equivalent to a pH of 5.

How do you solve for pH using [H+] = 1 * 10^-5 mol/L?

To solve for pH, you can use the pH equation: pH = -log[H+]. In this case, plugging in [H+] = 1 * 10^-5 mol/L, we get pH = -log(1 * 10^-5) = 5. This means that the solution has a pH of 5, which is slightly acidic.

What is the significance of [H+] = 1 * 10^-5 mol/L?

This concentration is considered to be neutral on the pH scale. Solutions with a lower [H+] concentration (higher pH) are basic, while solutions with a higher [H+] concentration (lower pH) are acidic. Therefore, a [H+] concentration of 1 * 10^-5 mol/L represents a balance between acidity and basicity.

How does changing the [H+] concentration affect pH?

As mentioned earlier, pH is directly related to [H+] concentration. As [H+] increases, pH decreases and the solution becomes more acidic. On the other hand, as [H+] decreases, pH increases and the solution becomes more basic. This relationship is important in understanding the properties of different solutions and their effects on biological and chemical processes.

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