Table of Contents
What factors determine whether a chemical reaction occurs?
Reactions occur when two reactant molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.
What 3 things must happen for a chemical reaction to occur?
Three things must happen for a reaction to occur.
- Molecules must collide.
- Molecules must collide with enough energy to begin to break the old bonds so new bonds can form. ( Remember activation energy)
- Molecules must collide with the correct orientation.
What factors generally determine whether a reaction happens or not Apex?
What factors generally determine whether a reaction happens or not? Enthalpy and entropy.
What must happen first during a chemical reaction?
In order for a chemical reaction to take place, the reactants must collide. The collision between the molecules in a chemical reaction provides the kinetic energy needed to break the necessary bonds so that new bonds can be formed.
What 2 things always happen in a chemical reaction?
In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
What is one factor that can affect the rate of a reaction?
The rate of a chemical reaction is influenced by many different factors, including reactant concentration, surface area, temperature, and catalysts.
What determines how fast a reaction happens apex?
If one of the reactants is a solid, the surface area of the solid will affect how fast the reaction goes. This is because the two types of molecule can only bump into each other at the liquid solid interface, i.e. on the surface of the solid. So the larger the surface area of the solid, the faster the reaction will be.
How does thermodynamics affect the rate of a chemical reaction?
Thermodynamics does not tell us if a reaction would take a month to complete or it will happen within couple of seconds Many factors influence the rate of a chemical reaction and it is important to find out the conditions under which a reaction will proceed most economically.
What causes a chemical reaction to take place?
For a chemical reaction to occur, there must be a certain number of molecules with energies equal to or greater than the activation energy. During a chemical reaction the reactants molecules collide with each other. The kinetic energy of collision, break bonds in the reactants.
Why are chemical reactions so important to science?
Chemical reactions help us understand the properties of matter. By studying the way a sample interacts with other matter, we can learn its chemical properties. These properties can be used to identify an unknown specimen or to predict how different types of matter might react with each other.
How does the presence of a catalyst affect the equilibrium state?
To reiterate, catalysts do not affect the equilibrium state of a reaction. In the presence of a catalyst, the same amounts of reactants and products will be present at equilibrium as there would be in the uncatalyzed reaction. To state this in chemical terms, catalysts affect the kinetics, but not the thermodynamics, of a reaction.