A color comparator serves to quantify the___________________?
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Answer: A. pH value
Explanation
A color comparator utilizes specific pH indicator dyes to measure acidity and alkalinity. The sample color is visually matched against a standard calibrated color reference chart. This optical comparison translates color wavelengths directly into quantifiable pH numerical values. The pH scale ranges from zero to fourteen, measuring the hydrogen ion concentration. Indicator chemicals change their molecular structure and visible color across specific pH intervals. Colorimetry is a fundamental analytical chemistry technique used for rapid quantitative concentration determinations.
Water treatment plants utilize color comparators to monitor drinking water safety continuously. Aquarium hobbyists check chemical balance in fish tanks using simple liquid test kits. Industrial chemical processes require accurate pH monitoring to maintain optimal reaction conditions. Electrode potential is measured using potentiometers and specialized electrochemical reference probes. Colour intensity alone does not provide a direct quantitative measurement of chemical acidity. The correct option is explicitly listed among the available multiple-choice alternatives.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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