Which Statement Is True for a Spontaneous Redox Reaction Carried

question 132

Multiple Choice

Which statement is true for a spontaneous redox reaction carried out at standard-state conditions?

• A)E°_red is always negative.
• B)E°_cell is always positive.
• C)E°_ox is always positive.
• D)E°_red is always positive.

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Definitions:

Concentration

Concentration refers to the amount of a substance per defined space; it is a measure of how much of a solute is dissolved in a specific amount of solvent.

Exothermic

Describes a chemical reaction that releases heat into its surroundings.

ΔS°

The standard entropy change of a system, measuring the change in disorder or randomness during a chemical process under standard conditions.

ΔH°

Denotes the standard enthalpy change of a reaction, measured under standard conditions (1 atm, 298.15 K).