Consider the Expression Below, Showing the Terms Which Contribute to the Heat

question 42

Multiple Choice

Consider the expression below, showing the terms which contribute to the heat of solution, ΔH_soln: ΔH_soln = ΔH_solute + ΔH_solvent + ΔH_mix
Which of the following sets correctly shows the signs (positive or negative) of the three terms on the right hand side of the equation?

• A)Δ H _solute > 0; Δ H _solvent > 0; Δ H _mix > 0
• B)Δ H _solute < 0; Δ H _solvent < 0; Δ H _mix < 0
• C)Δ H _solute > 0; Δ H _solvent > 0; Δ H _mix < 0
• D)Δ H _solute < 0; Δ H _solvent < 0; Δ H _mix > 0
• E)Δ H _solute < 0; Δ H _solvent > 0; Δ H _mix < 0

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Definitions:

Facial Paralysis

Facial paralysis involves the loss of voluntary muscle movement in one's face due to nerve damage, which can affect expressions and functions such as blinking and smiling.

Diagnosis

The process of determining which disease or condition explains a person's symptoms and signs.

Sympathetic Nervous System

A part of the autonomic nervous system that prepares the body for physical activity by increasing heart rate, dilating airways, and mobilizing energy stores, among other functions.

Parasympathetic Nervous System

The division of the autonomic nervous system that conserves energy and restores the body to a state of calm.