C-10-Q159mediumsingle_mcqH2SO4+Ca(OH)2→?\mathrm{H_2SO_4 + Ca(OH)_2 \to ?}H2SO4+Ca(OH)2→?aCaSO4+2H2O\mathrm{CaSO_4 + 2H_2O}CaSO4+2H2Ob