00:01
The standard free energy of a reaction can be computed in terms of its standard entropy change and standard entropy change according to the formula, delta g equals delta h minus t delta s.
00:13
Where delta g is the standard free energy change, delta h is the standard enthalpy change, delta s is the standard entropy change, and d is the temperature expressed in the unit of kelvin.
00:27
We want to find the standard free energy change of the reaction given with its standard nlp change of 75 .9 kilojoules, standard entropy change of 283 .5 joules and at the temperature of 161 .2 degrees celsius.
00:55
So let us take note that your delta g needs to be consistent with the units with delta h.
01:03
So if delta h is given here in kilojouze and also that delta s is in juice per kelvin, it's necessary that we convert either the enthalpy change from kilo juice to juice or the delta s from juice to kilo juice.
01:20
Also we need to take note that their temperature needs to to be in kelvin so to convert 161 .2 degrees celsius into kelvin we're going to add 273 to this value giving us 434 .2 so let's start we have a delta h let's convert delta h first to choose by multiplying it by 1000 giving us 75 ,900 so now let's solve for delta g you have 75 ,900 minus 434 .2 multiplied by delta s of 283 .5...