Question

prove that ∆H=∆U+∆nRT what is condition under which ∆u=∆H​

Answer 1

Answer :

This equation shows the Change in enthalpy.

∆H=∆U+∆nRT

proof

Pv = nRT

so let us consider that ,

vA = nA

and

vB = nB.

so we get,

p(vB - vA) = (nB - nA) RT

So ,

P∆V = ngRT

∆H=∆U +p∆v

Proved !!

condition : ∆u=∆H

at constant temperature

T = 0

now let's put the value of T equal to zero in the above equation :

and we get the following results.

∆H=∆U+∆nRT

(putting the value of T = 0 )

∆H=∆U

reason:

under isothermal condition value of temperature becomes constant so in order to make change in enthalpy equal to change in internal energy an isothermal condition should be created.

Answer 2

Answer:

$s \div xlz \: xal$

may it helps you