2Na + 2H2O = 2NaOH + H2↑
Na2O+H2O=2NaOH
2Na2O2+2H2O=4NaOH+O2
NaOH不和水反應(yīng).
最后都是氫氧化鈉溶液.
0.1mol的鈉、氧化鈉、過氧化鈉、氫氧化鈉質(zhì)量分別是2.3g 6.2g 7.8g 4.0g
2Na + 2H2O = 2NaOH + H2
46 36 80 2
2.3g 1.8g 4g 0.1g
Na質(zhì)量分?jǐn)?shù)=4/(100-1.+48) = 0.039
Na2O + H2O = 2NaOH
62 18 80
6.2g 1.8g 8g
Na2O質(zhì)量分?jǐn)?shù)=8/(100-1.8+8) = 0.075
2Na2O2 + 2H2O = 4NaOH + O2
156 36 160 32
7.8g 1.8g 8g 1.6g
Na2O2質(zhì)量分?jǐn)?shù)=8/(100-1.8+8) = 0.075
NaOH質(zhì)量分?jǐn)?shù)=4/(100+4) = 0.0385
可得 Na2O = Na2O2 > Na > NaOH
千萬不要想當(dāng)然