Compute internal energy change of a system if it
(i) absorbs 500 kJ heat and does 300 kJ work.

(ii) loses 200 kJ heat and has 450 kJ of work done on it.

Solution

(i) Here, q = 500 kJ, w = -300 kJ
According to the first law of thermodynamics,
$increment straight U space equals space straight q space plus space straight w space equals space 500 space minus space 300 space equals space 200$
(ii) Here, q = -200 kJ, w = 450 kJ
$therefore space space space space increment straight U space equals space straight q space plus space straight w space equals space minus 200 space plus space 450 space equals space 250 space kJ$

Some More Questions From Thermodynamics Chapter

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

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Thermodynamics

Compute internal energy change of a system if it
(i) absorbs 500 kJ heat and does 300 kJ work.

(ii) loses 200 kJ heat and has 450 kJ of work done on it.

Some More Questions From Thermodynamics Chapter

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

What is a state function?

A thermodynamic state function is a quantity

What is reversible process in thermodynamics?

Define irreversible change.

Name the variable that is kept constant in isochoric process and isobaric process.

Give one difference between an isothermal and an adiabatic process.

For the process to occur under adiabatic conditions, the correct condition is

Define internal energy of a system

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For Daily Free Study Material Join wiredfaculty

Thermodynamics

Compute internal energy change of a system if it(i) absorbs 500 kJ heat and does 300 kJ work.(ii) loses 200 kJ heat and has 450 kJ of work done on it.

Some More Questions From Thermodynamics Chapter

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

What is a state function?

A thermodynamic state function is a quantity

What is reversible process in thermodynamics?

Define irreversible change.

Name the variable that is kept constant in isochoric process and isobaric process.

Give one difference between an isothermal and an adiabatic process.

For the process to occur under adiabatic conditions, the correct condition is

Define internal energy of a system

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Compute internal energy change of a system if it
(i) absorbs 500 kJ heat and does 300 kJ work.

(ii) loses 200 kJ heat and has 450 kJ of work done on it.