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Solution Library
Choose Reactions That Are Exothermic
Question
Circle which of the following reactions are exothermic
1. 2Mg(s) + O2(g) → 2MgO(s) ΔH = -1203 kJ/mol
2. NH3(g) + HCl(g) → NH4Cl(s) ΔH = -176 kJ/mol
3. AgCl(s) → Ag+(aq) + Cl-(aq) ΔH = 127 kJ/mol
4. 2Fe2O3(s) + 3C(s) → 4Fe(s) + 3CO2(g) ΔH = 468 kJ/mol
5. C(graphite) + O2(g) → CO2(g) ΔH = -393.5 kJ/mol
6. CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) ΔH = -891 kJ/mol
Summary
The question belongs to Chemical Engineering and it discusses about choosing reactions that are exothermic.
Total Word Count 66
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