Assuming 100% efficiency, how many kilowatt hours (kW⋅h) of electrical energy are required to produce 1.00 kg of chlorine gas by the following reaction: NaCl(aq) + H₂O(l) → NaOH(aq) + 1/2 Cl₂(g) + 1/2 H₂(g) E° = -1.36 V