Enthalpy Change of Any Chemical Reaction = _____

question 73

Multiple Choice

Enthalpy change of any chemical reaction = _____

• A) sum of the enthalpies of formation of the products + sum of the enthalpies of formation of the reactants
• B) 2(sum of the enthalpies of formation of the reactants) + 2(sum of the enthalpies of formation of the products)
• C) sum of the enthalpies of formation of the products × sum of the enthalpies of formation of the reactants
• D) sum of the enthalpies of formation of the products − sum of the enthalpies of formation of the reactants
• E) sum of the enthalpies of formation of the products ÷ sum of the enthalpies of formation of the reactants

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Definitions:

Malonic Ester Synthesis

A carbon-carbon bond-forming reaction that uses malonic esters to synthesize carboxylic acids with various substituents.

Dieckmann Cyclization

A chemical reaction where a diester reacts with itself in the presence of a strong base to form a β-keto ester, effectively forming a ring structure as part of the process.

Cyclohexene

A volatile and flammable hydrocarbon with a cyclic structure, containing a single double bond, used as an intermediate in the synthesis of other compounds.

Crossed Claisen Condensation

A reaction involving the condensation of two different esters or an ester and a carbonyl compound under basic conditions to form a β-keto ester.