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CBSE Class 11-science Answered

At a given temperature the pressure of gas reduces to 75% of its initial value and the volume increases by 40% of its initial value. Find the temperature if the initial temperature was -10 degree Celsius. 
Asked by skkvaish | 23 May, 2019, 08:20: AM
Expert Answer
Ideal gas equation
P V equals n R T P subscript 1 equals P P subscript 2 equals P cross times 75 over 100 space space space space equals.75 P space space space space V subscript 1 equals V V subscript 2 equals V plus V cross times 40 over 100 space space space space space equals space V plus.4 V space space space space space space equals 1.4 V T subscript 1 equals 273 minus 10 equals 263 K T subscript 2 equals ? S o space n u m b e r space o f space m o l e s space a r e space s a m e space i n space b o t h space s i t u a t i o n space s o fraction numerator P subscript 1 V subscript 1 over denominator T subscript 1 end fraction equals fraction numerator P subscript 2 V subscript 2 over denominator T subscript 2 end fraction fraction numerator P V over denominator 263 end fraction equals fraction numerator.75 P cross times 1.4 V over denominator T subscript 2 end fraction T subscript 2 equals 263 cross times.75 cross times 1.4 space space space equals 276.15 K i n space degree space C space space space equals 276.15 K minus 273.15 equals 3 space degree C space space space space space space space space space space
Answered by Ravi | 23 May, 2019, 11:29: AM

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