The formula for determining the pH of a solution is pH = -log[H+], where [H+] is the hydrogen ion concentration (in M/L). What is the hydrogen ion concentration of an acid with a pH of 2.5?
substitute the value:
pH = -log[H+]
2.5 = -log[H+]
-2.5 = log[H+]
note that log has a base of. Thus to get [H+], raise both sides of equation by 10 (to cancel the log):
10^(-2.5) = [H+]
[H+] = 3.2 x 10^(-3)
To find the hydrogen ion concentration of an acid with a pH of 2.5, we can use the formula pH = -log[H+].
First, we need to rearrange the formula to solve for [H+].
pH = -log[H+]
-2.5 = log[H+]
Next, we need to express this equation in exponential form. In exponential form, the logarithm of [H+] is equal to the exponent to which 10 must be raised to obtain [H+].
10^(-2.5) = [H+]
Using a scientific calculator, evaluate 10^(-2.5). The result is approximately 0.00316.
Therefore, the hydrogen ion concentration of the acid with a pH of 2.5 is approximately 0.00316 M/L.