Air is filled in a bottle at atmospheric pressure and it is corked at 35oC. If the cork can come out at 3 atmospheric pressure, the upto what temperature should the bottle be heated in order to remove the cork.
A
325.5oC
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B
851oC
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C
651oC
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D
None of these
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Solution
The correct option is C651oC We know that ρ1V=nRT1 ⇒1×V=nR(35+273) =nR×308 ............(i) and ρ2V=nRT2 ⇒3×V=nRT2 ............(ii) On dividing Eq. (ii) by Eq. (i), we get 3=T2/308 ⇒T2=924K T2=924−273 =651oC.