Similar to the last problem, this involves a lot of steps, but don't worry its not very hard!! First you need to find the pOH value. Your calculations should look like this: pOH=-log(OH-) pOH=-log(5.01e-8) pOH=7.3 Next, find the pH value. Your calculations should look like this: pH+pOH=14 pH+7.3=14 pH= 14-7.3 pH= 6.7 Lastly, find the H+ concentration Your calculations should look like this: H+= 2nd log (-pH) H+= 2nd log (-6.7) H+= 2e-7 If you answered "B" the decimals are in the wrong place. If you answered "C" you forgot to add the negative sign when you were calculating the pOH.