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CBSE Class 11-science Answered

14th?
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Asked by smanishkumar2002 | 04 Aug, 2018, 05:41: AM
answered-by-expert Expert Answer
Here we have two cases 
 
Case I
Given :
P= 1 atm
w= 24 g
T = (t+273)K
V = V litre
 
Using the gas equation,
PV space equals space straight w over straight m space RT
1 space cross times space straight V space equals space 24 over straight m space straight R space left parenthesis straight T space plus space 273 right parenthesis.............................. left parenthesis 1 right parenthesis
 
Case II:
Given:
T = (T + 283)K
 
P = 1 plus fraction numerator 20 over denominator 100 space end fraction equals space 1.2 space atm
w = 24 g 
 
V= V Litre
 
Using the gas equation,
PV space equals space straight w over straight m space RT
1.2 space cross times space straight V space equals space 24 over straight m space straight R space left parenthesis straight T space plus space 283 right parenthesis.............................. left parenthesis 2 right parenthesis
 
By equating equation (1) and (2)
 
fraction numerator 1.2 over denominator 1 end fraction space equals fraction numerator left parenthesis T space plus 283 right parenthesis space over denominator left parenthesis T space plus 273 right parenthesis end fraction

therefore space 1.2 space T space plus space 327.6 space equals space T space plus space 283

0.2 T space equals space minus 44.6

T space equals space minus 223 degree C space equals space 50.15 K

A l s o space F r o m space left parenthesis 1 right parenthesis comma space o n space s u b s t i t u t i n g space t space a n d space m equals 120 space w e space g e t
space
1 space cross times space V space equals space fraction numerator 24 over denominator 120 space end fraction cross times 0.082 cross times 50.15

V space equals space 0.82 space l i t r e
Answered by Ramandeep | 06 Aug, 2018, 11:57: AM
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