If the PK_a of HCHO₂ Is 3

question 115

Multiple Choice

If the pK_a of HCHO₂ is 3.74 and the pH of an HCHO₂/NaCHO₂ solution is 3.74,which of the following is true?

• A)[HCHO₂] > [NaCHO₂]
• B)[HCHO₂] = [NaCHO₂]
• C)[HCHO₂] < [NaCHO₂]
• D)[HCHO₂] << [NaCHO₂]
• E)It is not possible to make a buffer of this pH from HCHO₂ and NaCHO₂.

---

Definitions:

External Locus

A belief that external forces, rather than personal actions or decisions, dictate the events in one’s life.

Feel-good,do-good Phenomenon

The observation that people are more likely to engage in prosocial behavior, such as helping others, when they are in a good mood.

Brain Activation

The process involving increased blood flow and energy consumption in specific areas of the brain in response to tasks or stimuli.

Mindfulness Meditation

A form of meditation that involves paying attention to the present moment, deliberately and without judgment, to foster a sense of calm and awareness.