A solution of acid was found to have a pH of 1.50. What is the hydrogen ion concentration of the solution? (Give your answer in scientific notation to 3 significant figures.)
1.5 = - log H+
10^1.5 = 1/H+
H+ = 1/ 10^1.5 = .0316
or 10^-1.5 = .0316
or antilog (-1.5) = .0316
lots of ways to do it, all really the same
To determine the hydrogen ion concentration of a solution, you can use the equation:
pH = -log[H+]
where [H+] represents the hydrogen ion concentration. Rearranging this equation to solve for [H+], we get:
[H+] = 10^(-pH)
Now, let's calculate the hydrogen ion concentration using the given pH of 1.50:
[H+] = 10^(-1.50)
To evaluate this expression, take 10 to the power of -1.50. The result is:
[H+] ≈ 0.032 M
Since the question asks for the answer in scientific notation to 3 significant figures, we can write the hydrogen ion concentration as:
[H+] ≈ 3.20 x 10^(-2) M