Start Free Mock LoginAlready registered? Login here

Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IFirst law of ThermodynamicsEasy2 minPYQ_2020

ChemistryEasysingle choice

A sample of gas contracts by 1 litre against a constant pressure of 0.1 atm while 5.13 J heat is lost to surroundings. The change in internal energy, U of the system is

Options:

Answer:

Solution:

$Δ E = q + W$
$W_{c o n t .} =- P Δ V$
$q = 0$ so $Δ E = W = P Δ V$
$W = 0 .1 × 1 × 101 .3 = 10 .13 J$
$[∵ 1 L-atm = 101 .3 J]$
$ΔE = - 5 .13 J + 10 .13 J = + 5 .0 J$

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Thermodynamics - ISubtopic:First law of Thermodynamics

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...