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Ch.15 - Chemical Equilibrium

Chapter 15, Problem 22b

Find and fix each mistake in the equilibrium constant expressions. b. CO(g) + Cl2(g) ⇌ COCl2(g) K = [CO][Cl2]/[COCl2]

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Hello everyone today. We are being asked to identify the correct K expression for the reaction. So we have to nitric oxides. Plus two hydrogen gas makes two nitrogen gas and two waters with K expression with key expressions. You only include only include gasses and Aquarius solutions. Therefore anything that is a solid or liquid can immediately be crossed out. Now when writing your K expression, you start with writing K and then you start with your products. So our product the only product that we have is into our nitrogen gas and that goes into brackets on the numerator and the denominator. We put our reactant which in this case we have nitric oxide and hydrogen gas. But notice that coefficient that we have in front of each one. So we're gonna write each reaction in brackets as such. We're gonna write, you know, but with that coefficient we're gonna raise that reacting to that power of so there's a two in front of the nitric oxide. So we're going to put an exponent as to and for the hydrogen gas, we're gonna put that in brackets. We're also going to raise that to the power of two. And this is essentially your K expression for this problem. I hope this helped. And until next time