How many molecules of water are produced from the reaction of 140 g of sulfuric acid and 180 grams of sodium hydroxide?
How many grams of excess reagent will be left over?
How many moles of sodium sulfate will be produced from this reaction?
2NaOH + H2SO4 = Na2SO4 + 2H2O
so, figure the moles of H2SO4 and NaOH are available
It takes 2 moles of NaOH for each mole of H2SO4
Now finish it off