What is the relationship between the coefficients in a balanced chemical equation for an overall reaction and the exponents in the rate law?

Video transcript

Hello everyone today. We are being asked the following question, which of the following is true about the relationship between the exponents and the rate law and the coefficients in a balanced chemical equation for an overall reaction. So that's recalled that there is something known as molecular charity in a chemical reactions. And so we say that a chemical reaction can be what's known as uni molecular by molecular or try molecular And try molecular is one of the rarer forms. So as the name suggests, you know, molecular reactions are only one step by molecular is two steps and try molecular occurs in three steps. And so union molecular in this one step is simply going to be a molecule that rearranges itself when it rearranges itself, it takes another form. And so by molecular is going to evolve to molecules. These two molecules are essentially going to collide. So two molecules colliding. And then lastly try molecular is going to involve three molecules colliding and it is the rarest form. And so we can conclude that unless the reaction takes place in a single elementary step, there is no relationship, There is absolutely no relationship between coefficients and exponents. So the coefficients in the balanced chemical equation and the rate law for the exponents. There's no correlation. And so if the overreaction does take place in a single elementary step, then the coefficients are the same. And so the anti choice that best represents This is D all of the above because a states that there is no relationship between the exponents and the rate law and the coefficient in the balanced chemical equation for an overall reaction that occurs in two elementary steps, Since the exponents in the rate law are not equal to the coefficient in the balanced equation, B says the same thing. But because of one elementary step, since the exponents are equal to the coefficient in the balanced equation, and then see says the same thing, there's no relationship that occurs in three elementary steps, since the exponents are not equal to the coefficients. And so that's what makes all three of these correct. And so our answer. Overall answer is going to be D all of the above. Overall, I hope this helped, and until next time.