Question

Cal was given a 6.0 mole sample of H3AsO4 that he needed to neutralize by reacting with NaOH solution. How many moles NaOH would Cal need?

Answer 1

3NaOH + H₃AsO₄ → Na₃AsO₄ + 3H₂O

If 6 mole of H3AsO4 react then ,

Mole ratio = 1:3

Moles of NaOH that react is given by,

$3×6= 18 moles$