A Buffer Is Prepared by Combining 25 ML of 0

question 4

Multiple Choice

A buffer is prepared by combining 25 mL of 0.50 M NaF(aq) with 25 mL of 0.25 M HCl.What is the pH of the buffer? (K_a (HF) = 6.9 × 10−⁴)

• A) 3.16
• B) 3.50
• C) 4.12
• D) 4.60
• E) 7.11

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Definitions:

Maltreated

Subjected to cruel or violent treatment, especially on a regular basis.

Brain Pathways

Neural pathways in the brain responsible for processing and transmitting information through interconnected neurons.

Centration

A cognitive limitation in early childhood, where a child can only focus on one aspect of a situation at a time.

Conservation

In cognitive development, the understanding that certain properties of objects or substances remain the same even when their appearance changes.