Calculate the Standard Enthalpy Change for the Reaction 2A $\rarr$ 5A₂B
Given

question 58

Multiple Choice

Calculate the standard enthalpy change for the reaction 2A + 2A₂ + 4AB + B $\rarr$ 5A₂B
Given: $\begin{array}{ll}2 \mathrm{~A}+\mathrm{B} \rightarrow \mathrm{~A}_{2} \mathrm{~B} & \Delta \mathrm{H}^{\circ}=-25.0 \mathrm{~kJ} / \mathrm{mol} \\2 \mathrm{~A}_{2} \mathrm{~B} \rightarrow 2 \mathrm{AB}+\mathrm{A}_{2} & \Delta \mathrm{H}^{\circ}=35.0 \mathrm{~kJ} / \mathrm{mol}\end{array}$

• A) - 95.0 kJ/mol
• B) - 60.0 kJ/mol
• C) - 15.0 kJ/mol
• D) 10.0 kJ/mol
• E) 45.0 kJ/mol

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Definitions:

Demand Elastic

Demand elasticity measures how sensitive the quantity demanded of a good or service is in response to a change in its price.

Perfectly Elastic

Describing a situation in which the demand or supply for a good or service is infinitely responsive to changes in price.

Percentage Change

A mathematical calculation that describes the degree of change over time, representing the difference as a percentage of the original figure.

Perfectly Inelastic

Describes a situation where the demand or supply for a good or service does not change in response to price changes.