Emulsification of 10 ml of oil in water produces 2 4 x 1018 droplets If the surface tension at - Chemistry - Basic Concepts in Chemistry

Question

Emulsification of 10 ml of oil in water produces 2 4 x
101 8 droplets If the surface tension at the
oil-water interface is 0 03 Jm-2x ​​ and the
area of each droplet is 12 5 x 10-16 m2, the
energy spent in the formation of oil droplets is :
A) 90 J
B) 30 J
C) 900 J
D) 10 J

Garima Chaudhary · Accepted Answer

Dear student,

Energy spent in the formation of oil droplets can also be termed as
Surface energy So here we have to calculate surface energy for the
formation of 2 4 x 1018 droplets
Relation between surface tension and surface energy is -
E = T S , where, E = surface energy, T = surface tension and S =
total surface area
E = 0 03 Jmâ€‹-2 X (2 4 x
1018 x 12 5 x 10-16)m2
E = 90 J

Regards

Emulsification of 10 ml of oil in water produces 2.4 x 101 8 droplets. If the surface tension at the oil-water interface is 0.03 Jm-2x ​​ and the area of each droplet is 12.5 x 10-16 m2, the energy spent in the formation of oil droplets is : A) 90 J B) 30 J C) 900 J D) 10 J

Emulsification of 10 ml of oil in water produces 2.4 x 10¹ ⁸ droplets. If the surface tension at the oil-water interface is 0.03 Jm^-2x and the area of each droplet is 12.5 x 10^-16 m², the energy spent in the formation of oil droplets is :
A) 90 J
B) 30 J
C) 900 J
D) 10 J