1.X+酸→盐+水2.X+水→碱 则X是.A.CaO B.Fe2O3 C.CO2 D.NaOH
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![1.X+酸→盐+水2.X+水→碱 则X是.A.CaO B.Fe2O3 C.CO2 D.NaOH](/uploads/image/z/11182019-59-9.jpg?t=1.X%2B%E9%85%B8%E2%86%92%E7%9B%90%2B%E6%B0%B42.X%2B%E6%B0%B4%E2%86%92%E7%A2%B1+%E5%88%99X%E6%98%AF.A.CaO+B.Fe2O3+C.CO2+D.NaOH)
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1.X+酸→盐+水2.X+水→碱 则X是.A.CaO B.Fe2O3 C.CO2 D.NaOH
1.X+酸→盐+水2.X+水→碱 则X是.A.CaO B.Fe2O3 C.CO2 D.NaOH
1.X+酸→盐+水2.X+水→碱 则X是.A.CaO B.Fe2O3 C.CO2 D.NaOH
CaO+2HCl=CaCl2+H2O,
CaO+H2O=Ca(OH)2
a
D