Question

What is the ph when two aqueous solutions are mixed: 50.0 mL of 1.30×10−2M H2SO4 and 50.0 mL of 3.85×10−2M NaOH.

Answer 1

Find the moles of \(H^+\) and the moles of \(OH^-\) with:

\(\sf Molarity=\dfrac{moles~of~solute}{L_{solution}}\)

Find out which one is in excess (remember it's a neutralization reaction), and find moles (subtract one from the other).

Find pH using relations:

\(pH=-log[H^+]\)

\(pOH=-log[OH^-]\)

pH+pOH=14