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Why does platinum metal make a good catalytic surface for reactant molecules?
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What physical factors control the rate of chemical reactions?
Surface area of the reactant.
Why do molecules at the surface of a liquid behave differently from molecules in the interior of the liquid?
In the interior the intermolecular forces of attraction is equal in all directions but the molecules at the surface of liquid experiences unequal intermolecular forces of attraction. the molecules at the surface are free so the adsorb liquid or gaseous molecules
How does increasing the surface area of a solid reactant affect the energy of molecular collisions?
Reactions depend on molecular collisions. If a solid reactant is a solid, grinding it into smaller particles will increase the surface area. The more surface area, the faster the molecular collisions, which in turn increases the rate of reaction.
What factors affect the rate of catalase catalyzed reactions?
If your question is "What affects catalyst performance?" (i.e. what stops them from working) then there are 2 main things: Atoms permanently bonded to the surface, blocking it, and so that stops other reactant molecules from sticking to it (catalyst poisoning) Catalyst sintering: This can be seen on high temperature solid metal catalysts, where there is a gradual loss of surface area for reactant molecules to stick to as a result of the individual catalyst surface atoms combining together (due to the heat) to make one big blob of lower surface area
How does increased surface area of a reactant in a chemical reaction leads to faster reaction?
The more finely divided the solid is, the faster the reaction happens. A powdered solid will normally produce a faster reaction than if the same mass is present as a single lump. The powdered solid has a greater surface area than the single lump.
Why does surface of a reactant influence the rate of the reaction?
A chemical reaction is nothing but the conversion of the reactant molecules into product molecules. By increasing the surface area of the reactants more number of reactant molecules are exposed which eventually increases the rate of the reaction...for example, powdered chalk piece dissolves faster in water than a piece of chalk.
Why does surface area of a reactant influence the rate of the reactions?
A chemical reaction is nothing but the conversion of the reactant molecules into product molecules. By increasing the surface area of the reactants more number of reactant molecules are exposed which eventually increases the rate of the reaction...for example, powdered chalk piece dissolves faster in water than a piece of chalk.
Why does surface area of a reactant influence the rate of the of the reaction?
by pooing on the leg
When platinum mixes with hydrogen what happens?
When platinum mixes with hydrogen, a form of chemical bonding called adsorption occurs. Hydrogen molecules attach themselves to the surface of platinum, enhancing the reactivity of the hydrogen. This process is commonly used in catalytic converters to facilitate the conversion of harmful exhaust gases into less harmful substances.
What is the surface area of a catalytic converter?
what is the surface area of a catalytic converter
Can water molecules evaporate at the surface or below the surface?
water molecules can evaporate at the surface but not below the surface
What physical factors control the rate of chemical reactions?
Surface area of the reactant.
You can speed up a reaction if you break the solid reactant into smaller pieces what factor does this describe?
When you break up a solid into smaller pieces it dissolves faster when you have big pieces of the solid you have to wait for the substance that is dissolving it ti be picked up by the object that is being dissolved but when the pieces are smaller it dissolves faster because their smaller and the substance dissolving the object get picked up much faster
Why do molecules at the surface of a liquid behave differently from molecules in the interior of the liquid?
In the interior the intermolecular forces of attraction is equal in all directions but the molecules at the surface of liquid experiences unequal intermolecular forces of attraction. the molecules at the surface are free so the adsorb liquid or gaseous molecules
Is the inward force among the molecules of a liquid?
The inward force among the molecules of a liquid is Surface Tension
Why evaporation known as surface phenomena?
Evaporation is known as surface phenomena because molecules of water present on the surface of liquid are bonded weakly as compaered to inner molecules and when temperature increases hydrogen bonding between water molecules breaks.Due to this water molecules tend to evaporate.so that's why it is called as surface phenomena.
Is this sentence true inceasing the surface area of a reactant exposes more of it to the reaction taking place?
true
