The Value of ΔH° for the Reaction Below Is -126

question 63

Multiple Choice

The value of ΔH° for the reaction below is -126 kJ. The amount of heat that is released by the reaction of 20.0 g of Na₂O₂ with water is __________ kJ. 2 Na₂O₂ (s) + 2 H₂O (l) → 4NaOH (s) + O₂ (g)

• A)16.2
• B)32.3
• C)67.5
• D)64.6
• E)-126

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Definitions:

Phosphates

Inorganic chemical compounds that contain the phosphate ion, fundamental to cellular function and structural frameworks of organisms.

Cellular Respiration

Cellular respiration is the process by which cells generate ATP, the energy currency, by breaking down glucose and other food molecules in the presence of oxygen.

Glucose

A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.

ATP

Stands for adenosine triphosphate, a molecule that carries energy within cells for metabolism.