Map du Sapling Learning For a particular reaction, _-328.21 kJ and S = 98.7 J/K.
ID: 562981 • Letter: M
Question
Map du Sapling Learning For a particular reaction, _-328.21 kJ and S = 98.7 J/K. Calculate G for this reaction at 298 K. Number 297.4 k.J What can be said about the spontaneity of the reaction at 298 K? O The system is at equilibrium. O The system is spontaneous as writte O The system is spontaneous in the reverse direction. There is additional feedback available! View this feedback bottom divider bar, Click on the drvider ba on the r again to hide the additional feedback. Close Previous Give Up & View Solution # Try Again Next ExitExplanation / Answer
Use the relation
G = H – T*S
where H = -328.21 kJ = (-328.21 kJ)*(1000 J/1 kJ) = -328210 J (1 kJ = 1000 J); S = 98.7 J/K and T = 298 K. Plug in values and obtain
G = (-328210 J) – (298 K)*(98.7 J/K)
= (-328210 J) – (29412.5 J)
= -(328210 + 29412.5) J = -357622.5 J = (-357622.5 J)*(1 kJ/1000 J) = -357.6225 kJ -357.62 kJ (ans).
Since G is negative at 298 K, the reaction is spontaneous.