## chaylaceyx3 one year ago Choose the expressions that properly express the rate of the following reaction in terms of disappearance of reactants and appearance of products. Reaction in picture below

In a given reaction, the rate of the reaction is given by the change in concentration of chemical species in a given amount of time multiplied by the inverse of the stoichiometric coefficient. E.g. reaction: $$\sf a~A+ b~B\rightarrow c~C$$ where lowercase letters are stoichiometric coefficients and uppercase are the chemical species, rate of reaction$$\sf =-\dfrac{1}{a}\dfrac{\Delta[A]}{\Delta t}=-\dfrac{1}{b}\dfrac{\Delta [B]}{\Delta t}=+\dfrac{1}{c}\dfrac{\Delta [C]}{\Delta t}$$ note that the rates of the reactants are negative because they are being used up, while the rates of the products are positive because it's being made.