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5. Thermodynamics and thermochemistry — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry5. Thermodynamics and thermochemistry1 Mark
MCQ
Which of the following relation is not correct?
  • ✓
    $\Delta H =\Delta U - P \Delta V$
  • B
    $\Delta U = q + W$
  • C
    $\Delta S _{ syz }+\Delta S _{ suxr } \geq 0$
  • D
    $\Delta G =\Delta H - T \Delta S$
✓

Answer

Correct option: A.
$\Delta H =\Delta U - P \Delta V$
a
If $U + P _{ V }$ (By definition)

$\Delta 14=\Delta U +\Delta( Pr )$ at constant pressure

$\Delta H =\Delta U + P \Delta V$

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