RP3 Effect of temperature on rate of a reaction Flashcards
1
Q
How can rate of reaction be measured
A
Initial rates method ie iodine clock
Continuous monitoring eg measuring volume of gas released in a reaction over time
2
Q
Investigate how rate of reaction changes with temperature (sodium thio)
A
Time how long it takes for a cross underneath the beaker to disappear, using a stopwatch
Repeat at 5+ different temperatures
3
Q
What are some issues with disappearing cross
A
Judged by eye and can be unreliable
Delayed reaction time with stopwatch
At low temps the reaction may be too slow
May not be enough ppt for cross to disappear
4
Q
How can we keep a substance at a constant temp
A
waterbath
