Use the heats of formation, AH°, in the table to determine AH for the reaction: 2 C2H2 (g) + 5 02(g) → 4 CO2 (g) + 2 H20 (g) AH°t , KJ mol1 + 227 Compound C2H2 (g) H2O (g) CO2 (g) -242 -393

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A: ∆Hf0 C2H4(g)=52.3 kJ/mol∆Hf0 CO2(g)=-393.5 kJ/mol∆Hf0 H2O(g)=-241.8 kJ/mol∆Hf0 O2(g)=0 kJ/mol

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Polymerization Kinetics

Polymerization is a chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that diverge in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes. Polymerization is generally classified into step-growth and chain polymerization. Polymers are categorized into linear polymer and cross-linked polymers that are produced either by condensation or additional polymerization.