Which One of the Following Reactions Will Occur Spontaneously at Standard-State

question 16

Multiple Choice

Which one of the following reactions will occur spontaneously at standard-state conditions and 25°C?

• A)Mg²⁺ + Ca \(\rarr\) Mg + Ca²⁺
• B)Au + 3K⁺ \(\rarr\) Au³⁺ + 3K
• C)2Al³⁺ + 3Fe \(\rarr\)2Al + 3Fe²⁺
• D)Cu + 2H⁺ \(\rarr\) Cu²⁺ + H₂
• E)Ni²⁺ + 2Fe²⁺(aq)\(\rarr\) Ni(s)+ 2Fe³⁺(aq)

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Definitions:

Brightness

A perceptual attribute of lights or surfaces that refers to how much they appear to "emit" or reflect light.

Hue

The attribute of a color determining its shade or tone, essentially referring to the specific color itself within the color spectrum.

Intensity

The degree of strength, force, or energy with which a phenomenon (e.g., light, sound, emotions) is expressed or perceived.

Accommodation

In cognitive development, the process of altering one's existing schemas or ways of thinking in response to new information.