0.5 mole of H2SO4 is mixed with 0.2 mole of CaOH2 . The maximum number of moles of  CaSO4 formed is? and Identify limiting reagent.

H2SO4+CaOH2→CaSO4+2H2OOne mole of H2SO4 react with one mole of CaOH2 to form one mole of CaSO4 . Even though there is 0.5 mole of H2SO4 only 0.2 mole of H2SO4 react. So, H2SO4 is in excess amount therefore H2SO4 is excess reagent and CaOH2 is limiting reagent.Therefore 0.2 mole of CaOH2 react with 0.2 mol of H2SO4 to form 0.2 mol of CaSO4 .