In Which of the Reactions Below Is ΔH an Enthalpy

question 22

Multiple Choice

In which of the reactions below is ΔH an enthalpy of formation?

• A) S₈(s)+ 8O₂(g)→ 8SO₂(g)
• B) N₂(g)+ O₂(g)→ 2NO(g)
• C) H₂(g)+ Cl₂(g)+ 4O₂(g)→ 2HClO₄(l)
• D) Cu(s)+ 1/2I₂(s)→ CuI(s)
• E) CH₄(g)+ 2O₂(g)→ CO₂(g)+ 2H₂O(g)

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Definitions:

Drivelines

Components, including the driveshaft, axles, CV joints, and differential, that transmit power from the engine to the wheels of a vehicle.

Torque Transfer

The process of transferring rotational force from one part of a mechanical system to another, allowing for movement and work to be done.

U-joints

Universal joints, flexible couplings that allow different parts of a drivetrain to pivot or rotate, accommodating changes in angle or alignment.

ASE Certification

A certification granted by the National Institute for Automotive Service Excellence to professionals in the automotive repair and service industry.