Problem: Food rots about 30 times more rapidly at 25 °C than when it is stored at 6 °C. Determine the overall activation energy for the processes responsible for its decomposition. a. not enough information is givenb. -124000 kJ/molc. 124000 kJ/mold. -124 kJ/mole. 124 kJ/mol

FREE Expert Solution

We’re being asked to determine the activation energy (Ea) of the processes responsible when food rots. We’re given the ratio of rates at two different temperatures.


This means we need to use the two-point form of the Arrhenius Equation:

ln k2k1=-EaR[1T2-1T1]

where k1 = rate constant at T1

k2 = rate constant at T2

Ea = activation energy (in J/mol)

R = gas constant (8.314 J/mol•K)

T1 and T2 = temperature (in K)


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Problem Details

Food rots about 30 times more rapidly at 25 °C than when it is stored at 6 °C. Determine the overall activation energy for the processes responsible for its decomposition. 

a. not enough information is given
b. -124000 kJ/mol
c. 124000 kJ/mol
d. -124 kJ/mol
e. 124 kJ/mol

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