Final answer:
To write equations for reaction rates, relate the change in concentration of reactants to the change in concentration of products based on the stoichiometry of the balanced equation. For plotting data pairs, use the mathematical relationship between variables to calculate and then plot the points as ordered pairs.
Step-by-step explanation:
To write the equations that relate the rates of consumption of the reactants and the rates of formation of the products in a chemical reaction, you need to know the balanced chemical equation of the reaction. For a general reaction where aA + bB → cC + dD, the rate of the reaction can be expressed in terms of the disappearance of reactants A and B, or the appearance of products C and D.
For instance, let's consider the reaction rate measured in terms of reactant A's consumption, the rate of reaction can be written as the negative change in the concentration of A over time:
Rate = -(∆[A]/∆t)/a.
Similarly, to express the rate in terms of product C's formation, the equation would be:
Rate = (∆[C]/∆t)/c.
When dealing with plotting data pairs, if we know the mathematical relationship between two variables, such as y = x² + 2, we can calculate and then plot the points. The ordered pairs are essentially the (x,y) coordinates obtained from the relationship.