A bubble of air is underwater at temperature 15 oC and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is 25 oC 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
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B
Volume will become greater by a factor of 1.1
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C
Volume will become smaller by a factor of 0.70
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D
Volume will become greater by a factor of 2.5
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Solution
The correct option is A Volume will become greater by a factor of 1.6 The pressure, temperature and volume under two different sets of conditions ar related by the following expression.
P1V1T1=P2V2T2......(1)
Let V be the initial volume. Substitute values in the above expression.
1.5×V288=1×V2298
V2=1.55V
i.e. volume of a bubble will be almost 1.6 times to initial volume of a bubble.