What Is the Magnitude of the Change in PH When

question 21

Multiple Choice

What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH₃CO₂H and 0.100 M NaCH₃CO₂? The K_a for acetic acid is 1.8 × 10^-5.

• A)0.00
• B)0.20
• C)0.47
• D)1.30

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Definitions:

Social Structure

The organized pattern of relationships and social institutions that together compose society, including roles, classes, and social hierarchies.

Republican Society

A social order that emphasizes the welfare of the community and operates on principles of democracy and the rule of law, often in contrast to a monarchy or dictatorship.

Common Good

The benefit or interests of all participants in a society, considered as a guiding principle for governance and public policy.

Standard Deviation

A measure of the dispersion or variability of a set of values around the mean.