Question

A balloon has a maximum capacity of 20 L. At one atmospheric pressure 10 L of air is filled in balloon.It will burst when pressure is (at constant temperature)
(1) 0.5 atm
(2) 0.4 atm
(3) 0.7 atm
(4) 0.8 atm
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Answer 1

Answer:

THE ANSWER WOULD BE .8 ATM

Explanation:

THOUGH THE PV=NRT

AND V=() CUBIC

Answer 2

A balloon has a maximum capacity of 20 L. At one atmospheric pressure 10 L of air is filled in balloon. It will burst when pressure is 0.4 atm

It will burst when pressure is 0.4 atm ( Option 2 is the correct answer)

• The balloon will burst when V > 20 L
• Given, P1= 1 atm, V1= 10 atm and V2=20 atm
• According to the Boyle's Low, we know that , P1V1= P2V2

P1V1 = P2V2

or, 1×10 = P2× 20

or, P2= 0.5 atm

• when the pressure is 0.5 the balloon will not burst. It remains the same condition
• For bursting the balloon the pressure must reduce below 0.5 atm.
• That's mean when P2<0.5, the balloon will burst.
• So, 0.4 atm is the perfect pressure for bursting the balloon.

Hence, The balloon will burst when the pressure is 0.4 atm.

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