00:01
So, positive value of delta s -0, that is the standard entropy change, it is associated with the processes that lead to an increase in disorder or randomness.
00:22
So the first reaction that is given here is pb solid plus cl2 gas gives you pbcl2 solid.
00:32
And this reaction involves the solid metal reacting with the gas to form a solid compound.
00:37
And this type of reaction tends to decrease the disorder and therefore delta s not is likely to be negative.
00:45
And that is in it that due to the presence of this gas molecule in the reactant side makes the randomness more towards a reactant side nor towards the product.
00:53
So overall this reaction is decreasing the randomness.
00:57
Now the second reaction, it is 2 moles of h2s gas plus 3 moles of oxygen gas.
01:03
Reacts to form 2 moles of water vapors and 2 moles of s .o .2 gas.
01:10
This reaction involves gases, forming other gases...