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

question 111

Multiple Choice

Which one of the following reactions will occur spontaneously at standard-state conditions and 25 ^$\circ$ 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:

Basilar Membrane

A key structure in the cochlea of the inner ear, responsible for converting sound vibrations into neural signals by moving in response to different frequencies.

Theory of Hearing

A scientific explanation detailing how sound waves are detected by the ear and interpreted by the brain as sounds.

Frequency Theory

A theory of hearing which suggests that the frequency of the auditory nerve's impulses corresponds to the frequency of a sound wave, enabling us to detect pitch.

Pitch Perception

The auditory sensation through which a listener can identify musical notes as higher or lower in the scale, fundamentally dependent on the frequency of the sound wave.