1. The problem statement, all variables and given/known data To unclog a drain you add 26g of sodium hydroxide to 150mL of water. Calculate the pH and pOH for the solution you prepared. Can someone tell me if I'm doing it right. 2. Relevant equations 3. The attempt at a solution n = m/M n = 26/40 n = 0.65mol for 0.15L Does this mean that I have to convert into mol/L? So that would be 4.33 mol/L and this would also be my H+ value/ And then would I plug it into my equation pH = -log[H+] and find my pH value. Then plug my pH value into my pH + pOH = 14 equation and solve for pOH? Is this the correct method?