Hydrogen can be obtained economically as a bi-product in the electrolysis of _____________.
Calcium chloride
water
Sodium hydroxide
brine

Question

anonymous · Answer

Can you write out the chemical formulas for each?

anonymous · Answer

CaCl2
H2O
NaOH

anonymous · Answer

CaCl2 will for sure not produce Hydrogen.
I think 2H2O will produce 2H2 + O2.

anonymous · Answer

My reasoning is, The H2 and O2 is stable.
However, in NaOH The Na has a positive charge and the OH has a negative charge (hence , it remains neutral).  If 2OH  for O2 + H2 The Na won't have anything to maintain it's neutrality.