The value of ∆H° for the reaction below is -126 kJ.
_____ kJ are released when 2.00 mol of NaOH is formed in the reaction: 2Na₂O₂(s) + 2H₂O(l) --> 4NaOH(s) + O₂(g).
a) 3.9
b) 63
c) 252
d) -126