Rate of reactions Flashcards
1
Q
what is the rate of reaction
A
speed of reaction (how fast/slow)
2
Q
high rate=?
A
fast reaction- less time to complete
3
Q
low rate=?
A
slow reaction- more time to complete
4
Q
How do you calculate rate
A
volume/mass of product produced or reactants used up over the time taken
5
Q
How to measure rate?
A
- volume of hydrogen over time cm3/s
- mass of magnesium chloride overtime g/s
6
Q
How does a chemical reaction occur
A
particles of the reactants must collide with each other with sufficient energy (successful collision) to break bonds so that new can be formed.
7
Q
What factors affect the rate of reaction
A
- concentration of reactants
- surface area (particle size)
- Temperature
- Catalysts
