Question

What will happen if we mix hydrogen into sodium hydroxide

Answer 1

The mixture of sodium hydroxide and hydrogen peroxide produces a strong oxidizer called sodium peroxide and can result in an exothermic mist from the onset of high temperatures and heat from the decomposition of incompatible mixtures causing a severe thermal hazard. (2 NaOH + H2O2→Na2O2 + 2 H2O).