Question

A bubble of air is underwater at temperature 15°C and the
pressure 1.5 bar. If the bubble rises to the surface where the
temperature is 25°C and the pressure is 1.0 bar, what will
happen to the volume of the bubble ?
(a) Volume will become greater by a factor of 1.6.
(b) Volume will become greater by a factor of 1.1.
(c ) Volume will become smaller by a factor of 0.70.
(d) Volume will become greater by a factor of 2.5.

Answer 1

The volume of bubble will be 1.6 time the initial volume of the bubble.

Option (A) is correct.

Explanation:

According to Ideal gas equation;

P1V1 / T1 = P2V2 / T2

1.5 x v1 / 288 = 1 x V2 / 298

V2 = 1.55 V1

This shows that the volume of bubble will be 1.6 time the initial volume of the bubble.

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