Calculate the acid concentration of a sample of acid rain with a pH of 4.20
pH = -log(H^+).
Substitute and solve for H^+.
To calculate the acid concentration of a sample of acid rain with a given pH, you can use the formula for pH:
pH = -log[H+]
Where [H+] represents the concentration of hydrogen ions (acid concentration) in moles per liter (M).
First, we need to convert the pH value of 4.20 into a hydrogen ion concentration. To do this, we use the formula:
[H+] = 10^(-pH)
Let's plug in the given pH value of 4.20 into the equation:
[H+] = 10^(-4.20)
Calculating this, we find:
[H+] ≈ 6.31 x 10^(-5) M
Therefore, the acid concentration of the acid rain sample is approximately 6.31 x 10^(-5) moles per liter (M).