: Phương trình H+ + OH- -> H2O là phương trình ion rút gọn của phản ứng nào sau đây? * H2SO4 + Ba(OH)2 -> BaSO4 + 2H2O
HCl + Cu(OH)2 -> CuCl2 + H2O
CH3COOH + NaOH -> CH3COONa + H2O
HNO3 +NaOH -> NaNO3 + H2O

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.