00:01
In this problem, we've been asked to understand the various conditions that we will need in order for hydrogen to absorb into a metal surface.
00:10
And all of these conditions are summed up in this equation for dissociative absorption.
00:16
We'll get that theta is equivalent to kp raised to the one -half, divided by one -plus k -p raised the one -half.
00:26
Theta stands for the surface coverage.
00:28
K is constant and p is our pressure.
00:34
So the first thing we're going to do is we're going to say, well, let's consider that our surface coverage is 0 .5 because we were told that only half of our surface is being covered or absorbed.
00:47
So we'll say 0 .5 is equivalent to k times 10, which is the pressure we were given, raised to the 1 half, divided by 1 plus k times 10 raised to the 1ā2.
01:00
When we do that, we simplify it to get .5, it's equivalent to 3 .16k, divided by 1 plus 3 .16k.
01:11
And then we'll do a little bit of algebraic manipulation to find that k is equivalent to 0 .3164.
01:21
Well, now we're going to say, well, consider that our surface coverage, pardon me, is .75.
01:27
So three -fourths of our surface is being covered by our diatomic hydrogen...