ppm means________________?
Correct answer: C. parts of solute in one million parts of solution
- A. parts of solute in 1000 parts of solvent
- B. parts of solvent in 1000 parts of solute
- C. parts of solute in one million parts of solution
- D. parts of solvent in one million parts of solute
Explanation
Parts per million means the amount of solute present per one million parts of solution, such as 1 mg solute per 1 kg aqueous solution. Students may choose parts per 1000 by confusing ppm with parts per thousand, which is represented as ppt rather than ppm.
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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