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Standard XII

Chemistry

Work done in Isothermal Irreversible Process

Which of the ...

Question

Which of the following are correct about irreversible isothermal expansion of ideal gas?

w = - q

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Δ U = 0

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Δ T = 0

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w = - n R T ln \frac{P_{1}}{P_{2}}

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Solution

The correct options are
A $w = - q$
B $Δ T = 0$
C $Δ U = 0$
$for irreversible isothermal expansion of ideal gas$
$w = - q$
$Δ U = 0$
$Δ T = 0$

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Similar questions

Q. Which of the following options are correct regarding :

q

w

and

△ U

for the reversible isothermal expansion of one mole of an ideal gas at

27^{o} C

from a volume of

10 d m^{3}

to a volume of

20 d m^{3}

Q. Calculate

q, w, Δ U

for the isothermal reversible expansion of 1 mole of an ideal gas from an initial pressure of

1.0 b a r

to a final pressure of

0.1 b a r

at a constant temperature of

273 K

Q. Assertion (A):

Δ U = 0

for a reversible as well as irreversible expansion of an ideal gas under isothermal conditions, whereas

S_{t o t a l} \neq 0

for an irreversible process.

Reason (R) :

Δ U = 0

is independent of temperature whereas

S

is proportional to temperature.

Column-1 represents the process
Column-2 represents the $w = Δ U$ for that process and
Column-3 represents the work done expression for that process.
$\begin{matrix} C o l u m n I & C o l u m n 2 & C o l u m n 3 (I) & A d i a b a t i c e x p a n s i o n & (i) & 0 & (P) & w = q (I I) & I r r e v e r s i b l e i s o t h e r m a l c o m p r e s s i o n & (i i) & P o s i t i v e & (Q) & w = - q (I I I) & R e v e r s i b l e i s o t h e r m a l c o m p r e s s i o n & (i i i) & N e g a t i v e & (R) & w = 0 (I V) & F r e e e x p a n s i o n & (i v) & q & (S) & w = ? U \end{matrix}$
Which set is correct for the bursting of tyre?

Q. For the isothermal expansion of an ideal gas into vaccum, the values of

Δ U = x, q = y, w = z

. Find the value of

x \times y \times z

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Which of the following are correct about irreversible isothermal expansion of ideal gas?

The correct options are A w=−q B ΔT=0 C ΔU=0for irreversible isothermal expansion of ideal gasw=−qΔU=0ΔT=0

The correct options are
A $w = - q$
B $Δ T = 0$
C $Δ U = 0$
$for irreversible isothermal expansion of ideal gas$
$w = - q$
$Δ U = 0$
$Δ T = 0$