Rate of reaction Flashcards
How do we measure how quick a reaction hapenned
By measuring the rate of reaction
How is the rate of reaction measured
It can be measured by measurements how much a product has been made in a given amount of time
What instruments can be used to measure the rate of reaction
- Measuring Cylinder
- Gas Syringe
How do we know when a reaction has stopped
When there is no longer an increase in a product being formed
Why does the rate of reaction change. Use ideas about particle theory.
At the start of the reaction, there are alot of particles that have not reacted together. Collisions happen frequently at the start of the reaction. However, as time goes on the amount of particles that have not collided together decrease. This means the rate of the reaction is slower. Eventually, every particle would have collided with each other. At this point, the reaction has stopped or finished.
What is the effect of changing the surface area
Why does surface area matter in the rate of reaction?
Surface area matters because a larger surface area exposes more particles to the reactants, increasing the chances of collisions between particles. More collisions result in a faster reaction. If the surface area is smaller, fewer particles are exposed, leading to fewer collisions and a slower reaction rate.
How does magnesium ribbon compare to magnesium block in terms of surface area and reaction rate?
Magnesium ribbon has a larger surface area compared to a magnesium block. This increased surface area allows more collisions between the acid and magnesium particles, leading to a faster reaction rate. In contrast, the magnesium block has less surface area exposed, so fewer collisions occur, and the reaction rate is slower.
How does magnesium powder compare to magnesium ribbon in terms of surface area and reaction rate?
Magnesium powder has an even larger surface area than magnesium ribbon because it consists of tiny particles. This large surface area provides many more points for collisions, resulting in a much faster reaction rate. Magnesium ribbon, with its smaller surface area, has fewer exposed particles, causing fewer collisions and a slower reaction rate.
How does increasing the temperature increase the rate of reaction.
Increase in temperature causes the particles to move faster causing more collisions and more energy resulting in a higher rate of reaction
How does a loaf of bread compare to slices of bread in terms of surface area and reaction rate?
Slices of bread have a larger surface area compared to a whole loaf because they expose more of the bread to the surrounding environment. This increased surface area means more collisions can occur if the bread is involved in a reaction (e.g., when toasted or reacting with heat), leading to a faster reaction. A whole loaf, with its smaller surface area exposed, has fewer collisions, resulting in a slower reaction.
How does increase in temperature affect the amount of product produced
It doesn’t produce more but causes the same amount to be produced in a shorter time
