0
Add your answer:
Earn +20 pts
When a catalyst is present is more or less activation energy needed to start a chemical reaction?
When a catalyst is present, less activation energy is needed to start a chemical reaction. This is because the catalyst provides an alternative pathway for the reaction to occur, allowing it to proceed more readily. The catalyst achieves this by lowering the activation energy barrier for the reaction.
What is the difference between the predicted and actual yield in a chemical reaction?
The actual yield of a reaction product is always less than the yield from the chemical equation. This is because of error.
What effect does a catalyst have?
A catalyst speeds up a chemical reaction by lowering the activation energy required for the reaction to occur. It does so by providing an alternative reaction pathway that requires less energy to initiate the reaction. The catalyst itself remains unchanged at the end of the reaction and can be used over and over again.
What is a type of chemical reaction where the energy of the products is less than the energy of the reactants?
An exothermic reaction is a type of chemical reaction where the energy of the products is less than the energy of the reactants. This means that energy is released during the reaction in the form of heat or light. Examples include combustion reactions and many neutralization reactions.
If the amount of oxygen reaching the log is reduced what happens to the rate of this chemical reaction?
The rate of the chemical reaction will decrease because oxygen is one of the reactants required for the reaction to occur. With less oxygen available, the reaction will proceed at a slower pace.
What is the best term to describe a chemical reaction in which the reactants have less potential energy than the products?
A chemical reaction whose reactants have less potential energy than the products would be called an endothermic reaction.
What alkaline earth metal has more protons then argon but less protons then krypton?
This chemical element is calcium (Ca).
Why would a chemical reaction stop?
Reactions stop because after time there are less reactants so the chemical reaction starts to slow down. As there are less and less reactants the chemical reaction gets slower and slower until it stops.
Why does an Alkaline battery last longer than an acid dry battery?
Alkaline batteries typically last longer than zinc-carbon (acid dry) batteries due to the use of a more efficient chemical reaction involving manganese dioxide and zinc in the alkaline battery. This reaction allows the alkaline battery to provide a steadier voltage output over time compared to the acid dry battery, resulting in longer overall battery life.
Why is a lava lamp a chemical reaction?
A lava lamp is not a chemical reaction. It operates based on the principles of heat transfer and density changes. The movement of the wax and liquid in the lamp is due to the heat from the bulb causing the wax to expand and become less dense, allowing it to rise, and then cool and become denser, causing it to sink.
When a catalyst is present more less activation energy is needed to start a chemical reaction?
Less Ea.
Why catalyst affect the rate of chemical reaction?
They provide alternative pathway for the reaction, usually with less energy barrier
When a catalyst is present is more or less activation energy needed to start a chemical reaction?
When a catalyst is present, less activation energy is needed to start a chemical reaction. This is because the catalyst provides an alternative pathway for the reaction to occur, allowing it to proceed more readily. The catalyst achieves this by lowering the activation energy barrier for the reaction.
Why doesn't brandy freeze?
The molecules in alcohol prevent the water molecules from moving. They constantly collide with each other causing chemical reaction which gives off heat which doesn't allowing the liquid to freeze. unless -54 degrees or less the liquid will not freeze.
What is the difference between the predicted and actual yield in a chemical reaction?
The actual yield of a reaction product is always less than the yield from the chemical equation. This is because of error.
What effect does a catalyst have?
A catalyst speeds up a chemical reaction by lowering the activation energy required for the reaction to occur. It does so by providing an alternative reaction pathway that requires less energy to initiate the reaction. The catalyst itself remains unchanged at the end of the reaction and can be used over and over again.
What is a type of chemical reaction where the energy of the products is less than the energy of the reactants?
An exothermic reaction is a type of chemical reaction where the energy of the products is less than the energy of the reactants. This means that energy is released during the reaction in the form of heat or light. Examples include combustion reactions and many neutralization reactions.
