So let's make another example. Let's say H two gas means sweet chlorine to yes, and it gives us HCL gas in this Say rates off this reaction you calls to 0.2 morality divided by seconds. So find the individual rates for these. So if you can recall for HDL, what we can write is a negative H two concentration change over Delta T, and this is going to be equal to 0.2 so easily. What you can say is the rate of change off H two with time is going to be negative. 0.2. See, this is the rate off change. This is not the rate off disappearance. The rate off disappearance is equal to rate, but rate off change is going to have a negative sign. Since this guy is getting consumed and similarly for chlorine, what we're going to have is going to be the same Then I think Korean change is going to be negative 0.2. So what about this HCL for a cl? What we will have is now, if you remember the flip this number one number two Delta concentration change off HCL over Delta T would be equal to 0.2, then rate off change off HCL with time is going to be 0.4.