Measuring rate of reaction (practical) Flashcards
1
Q
Formula for rate of reaction
A
Rate of reaction=Amount of reaction used or amount of product formed/Time
2
Q
How can you test rate of reaction
A
If the reactants are coloured and products are colourless you can time how long it takes for the solution to lose its colour
3
Q
How can you test for a Change in mass
Usually gas gives off
A
- Measure the speed of a reaction that prodcues a gas
- As the gas is released, the mass disappearing is measured on the balance
- The quicker the reading on the balance drops the faster the reaction
- if you take measurements at regular intervals, you can plot a rate of reaction graph
4
Q
How do you measyre the rate of reaction
The volume of gas given off
A
- Involves the use of a gas syringe to measure the volume of gas given off
- The more gas given off during a given time interval, the faster the reactiion
- Gas syringes usually give volumes accruate to the nearest cm^3
- take measurements at regular time intervals and plot a graph