Answer:
50.0moles
Step-by-step explanation:
The balanced equation of the reaction is:
2NaOH + H2SO4____ Na2SO4 +2H2O
2moles of NaOH reacted with 1mole of H2SO4
x moles of NaOH will react with 25moles of H2SO4
2moles______1mole
xmoles______25
x=25×2
x=50moles of NaOH