The pOH of a solution is 9.21. Calculate the hydrogen ion concentration of the solution. Be sure to report your answer to the correct number of significant figures

[OH-] = 6.17 * 10^-10

Explanation:

Step 1: Data given

pOH = 9.21

Step 2: Calculate [OH-]

pOH = - log [OH-] = 9.21

[OH-] = 10^-9.21

[OH-] = 6.17 * 10^-10

Step 3: Check if it's correct

pOH + pH = 14

[H+]*[OH-] = 10^-14

pH = 14 - 9.21 = 4.79

[H+] = 10^-4.79

[H+] = 1.62 * 10^-5

6.17 * 10^-10 * 1.62 * 10^-5 = 1 * 10^-14