00:01
So we return back to the role of catalyst.
00:03
Understand the role of catalysts in a reaction.
00:05
Okay, so just be attention because the answers are given or the possible choices for the answer in this question to find the incorrect, actually, one.
00:15
It's a bit tricky.
00:16
So you just have to be careful regarding the terms and the way the statements arranged in this actually possible choices here.
00:26
So i'm just going to explain all the details here.
00:30
The first item says a catalyst catalyzes a spontaneous chemical reaction.
00:34
Well, this is for sure true.
00:36
A spontaneous chemical reaction means that this chemical reaction is possible thermodynamically.
00:42
So regarding the energy terms, it is possible and goes toward a product.
00:46
What the catalyst does is just to speed it up.
00:50
And so for sure, this is true.
00:52
It is not our answer.
00:54
That means it's not our answer.
00:56
A catalyst catalyzes all chemical reactions.
00:58
Well, this is a tricky part of it because a continuation of the statement says whether spontaneous or non -spontaneous.
01:08
Just pay attention.
01:09
Non -spontaneous here means so the catalyst cannot make that reaction to become spontaneous or to go toward the product.
01:20
So a plus b so goes to form, for example, let's say c and b.
01:30
This delta g for this reaction is positive this is a definition of non -spontaneous reaction okay that means thermodynamics this is not possible so a catalyst cannot cannot so make this happen with or without okay with or without a catalyst if this reaction is not going to happen it won't happen that means a catalyst well we have to pay it in to what does it mean by catalyzes it could have a function of catalytic effect despite having it a catalytic for example what is what we're talking about so this is the catalytic so we have a thermodynamic barrier here in the middle of the reaction and these are the products so this is possible if this is possible thermodynamically this is called spontaneous the catalyst role is to reduce the level of this ea, okay? so that, oh, so i was a bit drunk here, drawing.
02:51
You'll see only that ea peak is reduced, okay? so this is the function of catalyst...