a sample of freshly pressed apple juice has a pH of 3.76. Calculate [H+].
[H+] = 10^-pH
so
[H+] = 10^-3.76
Ah, the wonderful world of apple juice! Now, if we look at the pH of 3.76, it implies that we are dealing with an acidic solution. To calculate the [H+], we can convert the pH to a concentration using the formula:
[H+] = 10^(-pH)
So, to crunch the numbers, we have:
[H+] = 10^(-3.76)
Now, let me just grab my calculator... *humming circus music*
*Ting-ting-ting*
And the answer is approximately 1.74 x 10^(-4) moles per liter. Ta-da!
To calculate the concentration of hydrogen ions ([H+]) from the pH value, you can use the following equation:
pH = -log[H+]
First, rearrange the equation to solve for [H+]:
[H+] = 10^(-pH)
Now, substitute the given pH value (3.76) to calculate [H+]:
[H+] = 10^(-3.76)
Using a scientific calculator, perform the calculation:
[H+] = 1.58 x 10^(-4) mol/L
Therefore, the concentration of hydrogen ions ([H+]) in the freshly pressed apple juice is 1.58 x 10^(-4) mol/L.
To calculate the concentration of hydrogen ions, [H+], we can use the equation:
[H+] = 10^(-pH)
In this case, the pH of the freshly pressed apple juice is 3.76. So, substituting the value into the equation:
[H+] = 10^(-3.76)
To evaluate this expression, you can use a scientific calculator or an online calculator.
The result of 10^(-3.76) is approximately 1.58 x 10^(-4) or 0.000158.
Therefore, the concentration of hydrogen ions in the apple juice is approximately 0.000158 M (moles per liter).