When [H⁺] = 4

question 102

Multiple Choice

When [H⁺] = 4.0 *10^-9 M in water at 25°C, then ________

• A) pH = 9.40.
• B) pH = 7.00.
• C) pH = -8.40.
• D) pH = 8.40.
• E) pH = -9.40.

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Definitions:

Storage Decay

The fading or weakening of memories over time when information is not accessed or used, related to the theory of forgetting in psychology.

Imagination Inflation

A situation where visualizing an event that never took place can boost the belief that it really happened.

Overlearning

The process of continuing to practice or study beyond just achieving initial mastery, enhancing performance and recall.

Retention

The ability to keep or hold information in memory over a period of time.