To determine the surface tension of a lyophilic sol, we can analyze the interactions between the dispersed phase and the dispersion medium. Here’s a step-by-step solution:
### Step-by-Step Solution:
1. **Understanding Lyophilic Sols**:
- A lyophilic sol is a type of colloid where the dispersed phase has a strong affinity for the dispersion medium. This means that the particles of the dispersed phase interact favorably with the molecules of the solvent.
2. **Surface Tension Concept**:
- Surface tension is a measure of the cohesive forces acting at the surface of a liquid. It is influenced by the interactions between the molecules in the liquid.
3. **Attractive Interactions**:
- In a lyophilic sol, the strong attractive interactions between the dispersed phase and the dispersion medium lead to a reduction in the cohesive forces at the surface of the liquid.
4. **Comparison with Water**:
- Water has a relatively high surface tension due to strong hydrogen bonding between its molecules. In the case of lyophilic sols, the presence of the dispersed phase disrupts these cohesive forces, resulting in lower surface tension.
5. **Conclusion**:
- Since the surface tension of a lyophilic sol is influenced by the favorable interactions between the dispersed phase and the dispersion medium, it is lower than that of pure water.
### Final Answer:
The surface tension of a lyophilic sol is **lower than that of H2O** (Option A).
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Correct the following statements by changing the underlined part of the sentence (Do not change the whole sentence) Viscosity of a lyophilic sol is ul("same as that of dispersion medium.")
Surface tension of a liquid is independent of the area of surface. Why?
Surface tension is due to
Surface tension of a liquid is a molecular phenomenon of liquids involving the force of cohesion along the liquid molecules. It is scalar quantity and is numberically equal to the surface energy. Numerically, it is proved that the potential soluble salts and surface active substance. Sparingly soluble salts and surface active substances decrease the surface tension of the liquid. However, the fairly soluble solutes increase the surface tension of the liquid. Surface tension of a liquid is independent of surface area but it depends on the intermolecular forces and the temperature. Which among the following is not the unit of surface tension ?
Surface tension of a liquid is a molecular phenomenon of liquids involving the force of cohesion along the liquid molecules. It is scalar quantity and is numerically equal to the surface energy. Numerically, it is proved that the potential soluble salts and surface active substance. Sparingly soluble salts and surface active substances decrease the surface tension of the liquid. However, the fairly soluble solutes increase the surface tension of the liquid. Surface tension of a liquid is independent of surface area but it depends on the intermolecular forces and the temperature. Surface tension of a liquid does not depend on :
