Question:
Consider the following diagram where an oil droplet is formed on a fabric immersed in water. At equilibrium, the balance of various interfacial forces acting on the droplet is given by the following equation:
\[ \gamma_{FW} = \gamma_{FO} + \gamma_{OW} \cos \theta \]
When a surfactant is added to water, assuming that \(\gamma_{OW}\) and \(\gamma_{FO}\) remain unchanged, the following happens:
Consider the following diagram where an oil droplet is formed on a fabric immersed in water. At equilibrium, the balance of various interfacial forces acting on the droplet is given by the following equation:
\[ \gamma_{FW} = \gamma_{FO} + \gamma_{OW} \cos \theta \]
When a surfactant is added to water, assuming that \(\gamma_{OW}\) and \(\gamma_{FO}\) remain unchanged, the following happens:
\[ \gamma_{FW} = \gamma_{FO} + \gamma_{OW} \cos \theta \]
When a surfactant is added to water, assuming that \(\gamma_{OW}\) and \(\gamma_{FO}\) remain unchanged, the following happens:
Updated On: Jul 20, 2024
- \(\gamma_{FW}\) decreases and the oil droplet tends to become rounder
- \(\gamma_{FW}\) increases and the oil droplet tends to become flatter
- \(\gamma_{FW}\) decreases and the oil droplet tends to become flatter
- \(\gamma_{FW}\) increases and the oil droplet tends to become rounder
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The Correct Option is A
Solution and Explanation
The correct option is (A): \(\gamma_{FW}\) decreases and the oil droplet tends to become rounder
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