Calculate the standard heat of formation of acetaldehyde, AH°f (CH3CHO), given the following information: CH3CHO(g) + 5/2 O2(g) → 2 CO2(g) + 2 H20(1) AH° = -1194 kJ AH°f of CO2(g) = -394 kJ/mol AH°f of H20(1) = -286 kJ/mol Hint: use the Hess's Law equation to calculate heat of formation of CH3CHO -166 kJ -332 kJ +166 kJ +332 kJ

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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.