Question

For the reaction, Ag2O(s)》2Ags(s)+1/2O2(g);♢H,♢S and T are 40.63kJ/mol,108.8J/Kmol and 373.4K respectively. Predict the feasibility of reaction???

Answer 1

The reaction will not continue in the forward direction.

Explanation:

Let's use Gibb's Free Energy for this, as it provides an easy to see example of whether a reaction will actually go or not.

`DeltaG = DeltaH - TDeltaS`

First we have to keep our units the same through all numbers, so let's change `DeltaH` to be from kJ/mol to J/mol. All we have to do is multiply by 1000

`40.63 * 1000 = 40630` J/mol

Now we can do the calculation:

`DeltaG = 40630 - 373.4 * 108.8`
`DeltaG = 40630 - 40625.9 = 4.1` J/mol

Since our `DeltaG` is positive, the reaction will not go, but it is just barely positive so a small increase in temperature would likely be able to make the forward reaction continue.

Hope this helps!