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Why does increasing the surface area make a catalyst more effective?
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Why rough surface of a catalyst is more effective?
Rough surfaces form irregular surface increase the surface area. Catalytic action is directly proportional to the area of contact.
What are 5 ways to control a chemical reaction?
1) Raising the temperature. 2) Increasing the concentration (in solution). 3) Increasing the pressure (in gases). 4) Increasing the surface area of a solid. 5) Use a catalyst.
Why use reactant in the powdered form?
A lump of solid has a much lower surface area compared to a powdered catalyst. Since most chemical reactions that are catalysed by solid phase catalysts (heterogeneous catalysts) occur on the catalyst surface more surface area = faster reaction.
Why does crushing a solid increase the speed at which the solid dissolves?
ALL reactions (apart from Nuclear) take place on the surface. By crushing the solid you are increasing the surface area and also the SA/Volume ratio. This increased surface area increases the area available for the dissolution reaction.
Why is a cell forced to divide?
it's the problem of surface area -to- volume ratio that mean there is no fitting between increasing of surface area and increasing of volume
Why is a catalyst more effective in powdered form?
Higher surface area is available for the chemical reaction.
Why rough surface of a catalyst is more effective?
Rough surfaces form irregular surface increase the surface area. Catalytic action is directly proportional to the area of contact.
Name two ways to speed up a reaction?
increasing surface area addition of a catalyst
What are 5 ways to control a chemical reaction?
1) Raising the temperature. 2) Increasing the concentration (in solution). 3) Increasing the pressure (in gases). 4) Increasing the surface area of a solid. 5) Use a catalyst.
Dose crushed ice melt the fastest?
in a sense, you are introducing a catalyst, that is, increasing surface area to the ice. in simpler terms, there is more area for heat to work on, so it does its job faster.
What are three methods to speed up a chemical reaction?
* breaking a solid into something smaller (to increase its surface area) * make the solution more concentrated, * increase the temperature. Other methods for increasing the rate of reaction are incrasing the pressure and adding a catalyst.
Why use reactant in the powdered form?
A lump of solid has a much lower surface area compared to a powdered catalyst. Since most chemical reactions that are catalysed by solid phase catalysts (heterogeneous catalysts) occur on the catalyst surface more surface area = faster reaction.
Methods to improve the reactivity of solids?
Reactivity of solids can be increased by increasing the surface area (ie. using powdered form of the solid), increasing temperature in oreder to break the bonds, adding catalyst to enhance the reaction,
Is the earths radius and surface area increasing?
no
Why is a cell forced to divide?
it's the problem of surface area -to- volume ratio that mean there is no fitting between increasing of surface area and increasing of volume
Why does crushing a solid increase the speed at which the solid dissolves?
ALL reactions (apart from Nuclear) take place on the surface. By crushing the solid you are increasing the surface area and also the SA/Volume ratio. This increased surface area increases the area available for the dissolution reaction.
What effects the rate of a chemical reaction?
Temperature, pressure, catalyst, surface area
