When reacting Al metal and NaOH(aq), I thought initially I would get the following reaction:
Al(s) + 3NaOH(aq) --> Al(OH)3(aq) + 3Na(s)
But I feel this is not correct and wondered if it should be:
2Al(s) + 2NaOH(aq) + 3H2O(l) --> 2Al(OH)4-(aq) + 2Na+(aq) + 3H2(g)
In explaining this reaction, how does hydrogen gas combine together to be evolved in this reaction?
Is there a possibility it could also be like this and why?
2Al(s) + 2NaOH(aq) + 2H2O(l) 2NaAlO2(s) + 3H2(g)