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How do catalyst and inhibtors affect reaction rate?
A catalyst speeds up the reaction and lowers the amount of heat needed.
Does adding heat energy affect the rate of reaction in a chemical change?
it depends on what chemicals used
What can change the rate of reaction of enzymes?
Heat can change the rate of reaction
How does concentration affect the rate of a chemical reaction?
Increasing the concentration of the reactants increases the rate of the reaction.
Does enthalpy of reaction affect the rate of a reaction?
The enthalphy of a reaction does not influence the rate of reaction, it may however influence the rate of the reverse reaction, as we now would have a change in potential energy (for example an exothermic reaction requires more energy to go in the reverse then does an endothermic). This is why you can consider some products thermodynamically favourable - as they are the exothermic product which would require more energy to turn back towards reactants then to stay as products. Overall rate is not seen in the various rate law or rate of reaction equations utilised such as arrhenius temperature dependance or the rate law equation. Rate is indepedant of enthalpy WRT to forward reaction.
What are two factors besides particle size that might affect the rate of the reaction?
Two factors that might affect the rate of a reaction are temperature and concentration. Higher temperatures generally result in faster reaction rates due to increased molecular energy and collision frequency. Additionally, higher reactant concentrations can lead to more frequent collisions between particles, increasing the reaction rate.
How does an increase in temperatre affect chemical reaction?
Increases reaction rate.
When would pressure affect the reaction rate?
if gases are involved in the reaction.
How does temperature affects reaction rate?
if the reaction is exothermic (creates heat) then adding heat will cause the reaction to run in the reverse direction if the reaction is endothermic (requires heat) then heat will speed it up
Does concentration have an affect on reaction rate?
Yes.why
Where surface area is not affect the rate of a reaction?
Surface area affect the reaction rate because the contact between finely divided particles is improved.
How does increase in temperature generally affect the rate of reaction?
The rate increases
