对西宁地区水和乙醇水溶液密度、沸点的测定结果:井水沸点93.0℃,20℃时密度1.0015,25℃时密度0.9974;自来水沸点91.2℃,20℃对密度0.9971,25℃时密度0.9969;蒸馏水沸点90.4℃,20℃对密度0.9970,25℃对密度0.9968。乙醇溶液浓度为50%、75%、99.5%时的沸点分别为76.2℃、71.6℃和66.7℃,20℃对的密度分别为0.9283、0.8753、0.7966,26℃时的密度分别为0.9264、0.8702和0.7900。 The density of water and ethanol solution in Xining area measured the boiling point: well water boiling point of 93.0 ℃, density of 1.0015 at 20 ℃, density of 0.9974 at 25 ℃; tap water boiling point of 91.2 ℃, density of 0.9971 at 20 ℃, density of 0.9969 at 25 ℃; The boiling point of 90.4 ℃, 20 ℃ to 0.9970 density, 25 ℃ to 0.9968 density. The ethanol solutions with the concentrations of 50%, 75% and 99.5% have the boiling points of 76.2 ℃, 71.6 ℃ and 66.7 ℃, respectively. The densities at 20 ℃ are 0.9283, 0.8753 and 0.7966, respectively. The densities at 26 ℃ are 0.9264, 0.8702 and 0.7900.