6.2g of NaOH is added to 800ml of water

Question

What is the molarity of the solution?
What is the pH?

Answer 1

mols NaOH = grams/molar mass = ?
Then M = mols/L
(OH^-) = M NaOH
pOH = -log(OH^-)
Then pH + pOH = pKw = 14