Rate Changes With Temperature Flashcards
1
Q
Describe method to investigate how rate changes with temperature
A
Measure a volume of reagent into conical flask and place it over a piece of paper marked with a cross
Add other reactant
Record time taken for cross to be obscured
Repeat at different temperatures and record times
2
Q
When can rate be tested by obscuring a cross?
A
If iodine is liberated
Eg starch solution added along with reactants
Record time taken for black/blue colour to obscure cross
3
Q
Are anions positive or negative?
A
Negative
