Problem: For which of the following reactions is ΔH°rxn equal to ΔH°f of the product(s)?2Na(s) + Cl2(g) → 2NaCl(s)H2(g) + 12O2(g) → H2O(g)Na(s) + 12Cl2(g) → NaCl(s)H2O2(g) → 12O2(g) + H2O(g)2H2(g) + O2(g) → 2H2O(g)Na(s) + 12Cl2(l) → NaCl(s)

🤓 Based on our data, we think this question is relevant for Professor Khajo's class at CCNY.

FREE Expert Solution

Recall that the equation for ΔH°_rxn is: 

$\boxed{\mathbf{∆}{\mathbf{H}}_{\mathbf{r}\mathbf{x}\mathbf{n}}\mathbf{=}\left(\mathbf{p}\mathbf{r}\mathbf{o}\mathbf{d}\mathbf{u}\mathbf{c}\mathbf{t}\mathbf{s}\right)\mathbf{-}\left(\mathbf{r}\mathbf{e}\mathbf{a}\mathbf{c}\mathbf{t}\mathbf{a}\mathbf{n}\mathbf{t}\mathbf{s}\right)}$

Where:

(products) = sum of ΔH°_f of products

(reactants) = sum of ΔH°_f of reactants

For this problem, we are asked the find the reaction where ΔH°_rxn is equal to ΔH°_f of the product(s).