What is the effect of adding NaOH and Al with H2O? Is the reaction--2NaOH + 2Al + 2H2O → 3H2 + 2NaAlO2??

I belive this to be the reaction involved in using Drano and I was wondering if it would be effected by the temperature of the H2O and if the reaction would be effected by NaCl mixed in the H2O.

lemonie8 years ago
You tend to produce hydrates of alumina (Al2O3.xH2O), it's a bit messy. Apart from the actual proportions in the equation I think you've got the idea right.
I don't see that having chloride present would make much difference to this, as -OH and H2O have a much stronger attraction to the aluminium centre.