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ICSE Class 9 Answered

A gas occupies a volume of 340 CC at STP find its volume at 20 degrees celsius and 700 mm of HG
Asked by gup.navya2006 | 01 Dec, 2020, 09:28: AM
answered-by-expert Expert Answer

A gas occupies a volume of 340 CC at STP find its volume at 20 degrees celsius and 700 mm of HG

Given:
 
V1 = 340 cc at STP
 
T1 = 273 K
 
P1 = 760 mm Hg
 
V2 = ?
 
P2 = 700 mm Hg
 
T2 = 20 + 273
    = 293 K
 
By using ideal gas equation,
 
fraction numerator straight P subscript 1 straight V subscript 1 over denominator straight T subscript 1 end fraction equals space fraction numerator straight P subscript 2 straight V subscript 2 over denominator straight T subscript 2 end fraction fraction numerator 760 cross times 340 over denominator 273 end fraction space equals fraction numerator 700 cross times straight V subscript 2 over denominator 293 end fraction straight V subscript 2 space equals fraction numerator 760 cross times 340 over denominator 273 end fraction cross times 293 over 700 straight V subscript 2 space equals space 396.16 space cc
 
the volume will be 396.18 cc
Answered by Varsha | 07 Dec, 2020, 19:03: PM

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