I2(g) + Cl2(g)2ICl(g) Using standard thermodynamic data at 298K, calculate the entropy change for the surroundings when 1.62 moles of I2(g) react at standard conditions. S°surroundings = J/K

The change in entropy of the surrounding is -146.11 J/K.

Explanation:

Enthalpy of formation of iodine gas =

Enthalpy of formation of chlorine gas =

Enthalpy of formation of ICl gas =

The equation used to calculate enthalpy change is of a reaction is:  

For the given chemical reaction:

The equation for the enthalpy change of the above reaction is:

Enthaply change when 1.62 moles of iodine gas recast:

Entropy of the surrounding =

1 kJ = 1000 J

The change in entropy of the surrounding is -146.11 J/K.

a:

by the combination of an unlimited number of elements

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