Given that CII3 CIIO+(5)/(2) O2 →2 CO2+2 II2 O ; ΔH= 1168 kJ / molc ; CII3 COOII+2 O2 ⟶2 CO2 +2

step 1 Given that, the following reaction, enthalpy change is equal to 1 ,168 kilojoult per mole. For t

Given that CII3 CIIO+(5)/(2) O2 →2 CO2+2 II2 O ; ΔH= 1168...

Given that $\mathrm{CII}_{3} \mathrm{CIIO}+\frac{5}{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{CO}_{2}+2 \mathrm{II}_{2} \mathrm{O} ; \Delta H=$ $1168 \mathrm{~kJ} / \mathrm{molc} ; \mathrm{CII}_{3} \mathrm{COOII}+2 \mathrm{O}_{2} \longrightarrow 2 \mathrm{CO}_{2}$ $+2 \mathrm{II}_{2} \mathrm{O} ; \Delta H=876 \mathrm{~kJ} / \mathrm{mole} . \Delta H$ for the reaction $\mathrm{CII}_{3} \mathrm{CIIO}+\frac{1}{2} \mathrm{O}_{2} \longrightarrow \mathrm{CII}_{3} \mathrm{COOII}$ is (1) $292 \mathrm{~kJ} / \mathrm{molc}$ (2) $378 \mathrm{~kJ} / \mathrm{molc}$ (3) $195 \mathrm{~kJ} / \mathrm{molc}$ (4) $2044 \mathrm{~kJ} / \mathrm{molc}$

Given that $\mathrm{CII}_{3} \mathrm{CIIO}+\frac{5}{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{CO}_{2}+2 \mathrm{II}_{2} \mathrm{O} ; \Delta H=$
$1168 \mathrm{~kJ} / \mathrm{molc} ; \mathrm{CII}_{3} \mathrm{COOII}+2 \mathrm{O}_{2} \longrightarrow 2 \mathrm{CO}_{2}$
$+2 \mathrm{II}_{2} \mathrm{O} ; \Delta H=876 \mathrm{~kJ} / \mathrm{mole} . \Delta H$ for the reaction
$\mathrm{CII}_{3} \mathrm{CIIO}+\frac{1}{2} \mathrm{O}_{2} \longrightarrow \mathrm{CII}_{3} \mathrm{COOII}$ is
(1) $292 \mathrm{~kJ} / \mathrm{molc}$
(2) $378 \mathrm{~kJ} / \mathrm{molc}$
(3) $195 \mathrm{~kJ} / \mathrm{molc}$
(4) $2044 \mathrm{~kJ} / \mathrm{molc}$

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Key Concepts

Hess's Law

Hess's Law states that the overall enthalpy change for a reaction is the sum of the enthalpy changes for the individual steps into which the reaction can be divided, regardless of the pathway taken. This principle allows one to calculate the enthalpy change of a reaction by combining other reactions with known enthalpy changes.

Reaction Enthalpy

Reaction enthalpy is the heat change that occurs during a chemical reaction at constant pressure. It is inherently a state function, meaning that its value depends only on the initial and final states of the system. This concept is key in thermochemistry for determining energy changes in chemical processes.

Stoichiometric Manipulation

Stoichiometric manipulation involves the appropriate scaling and combining of chemical equations to derive a target reaction. When applying Hess's Law, the amounts (stoichiometric coefficients) of reactants and products must be adjusted accordingly, and the corresponding enthalpy changes are scaled by the same factors to obtain the correct overall enthalpy change.

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