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Check Audience Understanding
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Speech & Debate
SD.096 Check Audience Understanding
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A chemistry speaker says the pH scale is logarithmic, and listeners treat a change from pH 6 to pH 5 as a one-unit increase of the ordinary kind. Which recap best repairs the scale?
A
The pH numbers are labels with no quantitative relationship to concentration.
B
A one-unit drop on the pH scale represents a tenfold increase in hydrogen-ion concentration, not merely one extra equal-sized step.
C
Every one-unit pH change represents exactly one additional hydrogen ion in the sample.
D
Logarithmic is advanced vocabulary, so the audience should ignore it.
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