Rate of reaction practical Flashcards
1
Q
- Use measuring…
A
cylinder to put 10 cm3 of sodium thiosulfate into a conical flask.
2
Q
- Place the conical flask…
A
onto a printed black cross.
3
Q
- Add 10 cm3 of…
A
hydrochloric acid into the conical flask.
4
Q
- Swirl the solution and start…
A
a stopwatch.
5
Q
- Look down through…
A
top of the conical flask.
6
Q
- Stop the stopwatch when…
A
the solution turns cloudy and we cannot see the black cross anymore.
7
Q
- Carry out the experiment using…
A
lower concentrations of sodium thiosulfate.
8
Q
- Repeat the whole…
A
twice and use the data to calculate a mean for each concentration.
9
Q
This reaction produces a white…
A
precipitate of sulfur.
