The [OH-] ion concentration of a sample is 1 × 10-10 M. What is the concentration of [H+] in the sample at 25°C?
A. 1 × 10-14 M
B. 1 × 10-4 M
C. 1 × 10-10 M
D. 1 × 10-6 M
I think the answer is C. is this correct?
it's B
To determine the concentration of [H+] in the sample, we can use the relationship between [H+] and [OH-] in water.
In pure water at 25°C, the concentration of both [H+] and [OH-] ions are equal and can be represented as 1 × 10-7 M. This is known as the neutral condition.
However, in this sample, we are given the concentration of [OH-], which is 1 × 10-10 M. To find the concentration of [H+], we can use the formula for the ion product of water, which states that the product of [H+] and [OH-] is equal to a constant at a given temperature, 25°C in this case.
[H+][OH-] = 1 × 10-14
Plugging in the given [OH-] concentration of 1 × 10-10 M, we can solve for [H+]:
[H+](1 × 10-10) = 1 × 10-14
[H+] = (1 × 10-14) / (1 × 10-10)
[H+] = 1 × 10-4
Therefore, the concentration of [H+] in the sample is 1 × 10-4 M. The correct answer is option B.
No.
(H^+)(OH^-) = Kw = 1E-14.
You know OH, solve for H.