Required Practical 11 - Rates of Reactions Flashcards
1
Q
What is the objective of this practical
A
To investigate the effect of changing concentration on the rate of reaction
2
Q
What is the hypothesis of this practical?
A
A precipitate will be formed quicker if the concentration of the reactants is greater
3
Q
What 2 solutions do you need?
A
40 g dm-3 sodium thiosulfate solution and 1.0 mol dm-3 dilute hydrochloric acid
4
Q
What equipment do you need?
A
100cm^3 conical flask, black cross on paper, white paper or white tile, and timer
5
Q
What is step 1?
A
Add acid to sodium thiosulfate solution, start timer.
6
Q
What is step 2?
A
Stop timer when the X is no longer visible, record timer.
7
Q
What is step 3?
A
Repeat steps 1&2 with different concentrations
