Reaction Coordinate Diagrams
No description yet. This curated deck is ready for daily study.
Card preview (12)
What does a coordinate diagrams do?
Conveys information about a chemical reaction
If the reactants are higher on the y axis than the products, than?
• The reactants have a higher energy level and are LESS stable • delta H is negative • exothermic (gives off heat- feels warm)
If the reactants are lower on the y axis than the products, than?
• The reactants have a lower energy level and are MORE stable • delta H is positive • endothermic (consumes heat- feels cold)
What goes on the y axis and x axis?
y axis= energy x axis= reaction coordinate or the reaction moving forward
What is delta H?
difference between the energy levels of the reactants and products. *H= energy of products MINUS energy of reactants
delta E
Activation energy. Height between the reactants and the “top of the hill” on the graph
What is the difference between positive and negative Delta H? What does it tell you?
Negative H= exothermic= gives off heat Positive H= endothermic= consumes heat
If the reactants and products are at the same level of energy, the reaction is called?
isothermic
What are intermediate products?
products that are made in between two transition states
What are transition states?
They are the top of each hill in a multistep reaction
What is the difference between transition states and intermediates?
• transition states exists very briefly between a reactant and an intermediate or reactant and product • intermediates are more long lives transition states that be isolated, stored, and analyzed. (transition states cannot)
What is the rate determining step?
It is the slowest step in a multistep reaction. It It is the step with the LARGEST activation energy (largest hill).