Chemical kinetics

Question 1

On a graph, an ______ reaction occurs when the reactants start at a higher energy than the products (products end at a lower level than the reactants)

Answer 1

Exergonic

Question 2

On a graph, an ______ reaction occurs when the products end at a higher energy than the reactants start

Answer 2

Endergonic

Question 3

The reaction rate is a measure of how _____

Answer 3

quickly the concentrations of reactants and products are changing

Question 4

How would you find the overall order of this reaction:

rate= k[A]^x[B]^y

Answer 4

Add x and y together

Question 5

How do you determine the rate of each reactant?

Question 6

Is a reaction rate written with the reactants or the products?

Answer 6

Reactants

Question 7

Since reactants are disappearing, they’re usually written with a ____ sign, while products are written with a _____ sign bc they’re appearing

Answer 7

Negative
Positive

Question 8

What are the steps to determining the rate of a reactant?

Answer 8

1) Find a column where that reactant changes but the others stay the same
2) Compare the magnitude of change to that of the product
ex: if the reactant doubles and so does the product, then the reaction is first order since they are 1:1. If the reactant doubles and the product quadruples, then it’s second order
3) Repeat for the other reactants

Question 9

This order reaction occurs when the rate of product formation is independent of the [reactant] changing

Answer 9

Zero-order

Question 10

This order reaction occurs when the rate of product formation is a 1:1 ratio with reactant dissolution

Answer 10

First-order

Question 11

This order reaction occurs when the rate of product formation is the square of the reactants dissolution (1:2 ratio)

Answer 11

Second-order