Rate of reaction is a measure of how fast a reaction takes place. In industry, chemists control rates of reaction to ensure the production is safe but still fast enough to keep up with demand.
Which piece of apparatus could be used to measure the volume of gas produced during a reaction?
How could you follow the rate of a reaction that forms a precipitate?
Measure change in mass
Judge by eye when a cross placed under the reacting mixture disappears
Measure the volume of gas produced
How does rate of reaction change if the concentration of a reactant is increased?
Rate of reaction is unchanged
Rate of reaction decreases
Rate of reaction increases
How does a catalyst increase the rate of reaction?
It gives the reacting particles more energy
It lowers the activation energy
It increases the number of reacting particles
What change increases the energy of reacting particles?
Increasing the surface area to volume ratio
Increasing the temperature
Increasing the concentration
How does the rate of reaction change if the temperature is increased?
How could you follow the rate of a reaction that forms a gas?
Measure the increase in mass of an open reaction vessel and its contents
What is the average rate of reaction if 60 cm3 of gas is produced in 30 seconds?
How do you find the rate of reaction at a specific time?
Find the gradient of a line between 0 seconds and that time
Find the gradient of the tangent to the line
Find the gradient of a line between this time and the next plotted point
What is an enzyme?
A biological catalyst
A living organism, such as yeast
A type of industrial process