University Science Books presented by Sapling Leaming eral Chemistry 4thEdition

Question

University Science Books presented by Sapling Leaming eral Chemistry 4thEdition Ma |Compound Use the data given here to calculate the values of Gan at 25 for the reaction described by the equation 3 +387.7 -622.6 +402.0 A+B Number kJ/ mol If AHraxn and ASrn are both negative values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is O O O O entropy-driven to the right. enthalpy-driven to the right enthalpy-driven to the left. entropy-driven to the left. PrGive Up & View Salution Check Answer x

Explanation / Answer

dG reaction = dG (C) - dG (A) - dG (B)

= 402KJ/mol - 387.7 KJ/mol - ( -622.6 KJ/mol)

= 636.9 KJ/mol

2) The answer for question is

entropy - driven to the left

( since dG reatcion is +ve , left side will have dG -ve and is spontaneous, here dS is -ve forward , hence dS is +ve on left side , hence it causes sponateous )

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