(1)单质铝与氢氧化钠溶液反应生成偏铝酸钠和氢气,反应的化学方程式为:2Al+2H
2O+2NaOH=NaAlO
2+3H
2↑;
故答案为:2Al+2H
2O+2NaOH=NaAlO
2+3H
2↑;
(2)三氧化二铝与强碱反应生成偏铝酸钠和水,反应的离子方程式为:Al
2O
3+2OH
-=2AlO
2-+H
2O;
故答案为:Al
2O
3+2OH
-=2AlO
2-+H
2O;
(3)溴乙烷在碱溶液中的水解反应生成乙醇和溴化钠,反应的化学方程式为:CH
3CH
2Br+NaOH→CH
3CH
2OH+NaBr;
故答案为:CH
3CH
2Br+NaOH→CH
3CH
2OH+NaBr;
(4)乙二酸和乙二醇之间进行脱水缩聚形成链状高聚物,反应的化学方程式为nHOCH
2CH
2OH+nHOOC-COOH
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b3fb43166d224f4a1e78bea20af790529922d19a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
+2nH
2O;
故答案为:nHOCH
2CH
2OH+nHOOC-COOH
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b3fb43166d224f4a1e78bea20af790529922d19a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
+2nH
2O.