Question

which of the following has maximum surface tension

Answer 1

The question is incomplete.

Howecer,

Surface tension: The minimization of the surface area caused due to the attraction of particles on the surface of the liquid is referred to as surface tension.

The polar property of water makes the molecules attract with each other. The hydrogen ends are positive whereas the oxygen ends are negative.  

Water has high surface tension compared to many other liquids. The surface tension of water is estimated to be  72 dynes/cm at 25°C.

Hence,water is the answer.

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Answer 2

Question:

Which of the following has maximum surface tension?

a. Water

b.Soap solution in water

c. Detergent solution in water

d.Glycerol in water

Answer:

Option d. Glycerol in water has maximum surface tension.

Explanation:

• Surface tension generally refers to a fluid's tendency to reduce its surface area to the smallest amount possible.
• It is a phenomenon that happens when a liquid's surface comes into touch with another phase.
• Surface tension is caused by the forces of attraction of the particles, which might be cohesive and adhesive forces in the surface layer by the bulk of the liquid.
• Basically, it is the ratio of the length L to the surface force F. It may be written mathematically as:

          $T=\frac{F}{L}$

      Where, T ⇒ surface tension of the liquid

                   F ⇒ force per unit length

                   L ⇒length in which the force acts

• Surface-active compounds and salts with limited solubility reduce the liquid's surface tension.
• However, the relatively soluble solutes raise the liquid's surface tension.
• Since glycerol has more hydrogen bonds generated per molecule than the other options, it has the greatest surface tension when dissolved in water.
• Now, in the remaining options, soap in water and detergent in water have lower surface tensions than pure water.

• Therefore, the correct option is d.

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