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In which of the following reactions, Del...

In which of the following reactions, `DeltaH gt DeltaU`?

A

`H_(2)(g) +I_(2)(g)rarr 2HI(g)`

B

`PCI_(5)(g) rarr PCI_(3)(g) +CI(g)`

C

`2H_(2)O_(2)(l)rarr 2H_(2)O(l)+O_(2)(g)`

D

`C(s)+O_(2)(g)rarr CO_(2)(g)`

Text Solution

AI Generated Solution

To determine in which of the following reactions \( \Delta H > \Delta U \), we need to analyze the relationship between the change in enthalpy (\( \Delta H \)) and the change in internal energy (\( \Delta U \)). The relationship is given by the equation: \[ \Delta H = \Delta U + \Delta N_g RT \] Where: - \( \Delta N_g \) is the change in the number of moles of gas (moles of products - moles of reactants). ...
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