Answer: lyophobic sol.
- A lyophilic sol
- B lyophobic sol
- C true solution
- D coarse suspension
Correct answer: B. lyophobic sol
Explanation: Metal sols such as gold are lyophobic; Bredig’s arc strikes an electric arc between metal electrodes under water.
A typical adsorption isotherm: x/m (mass adsorbed per gram of adsorbent) rises steeply at low pressure, then flattens into a saturation plateau as the adsorbent surface fills up.
Concept context
Explore the chemistry that happens at interfaces, from catalysts that speed up industrial reactions to colloids like milk, smoke, and gels that surround us every day.