Effects of Concentration Flashcards
1
Q
practical
A
observing colour change when reacting sodium thiosulphate and hydrochloric acid
2
Q
colour change
A
colourless to cloudy yellow
3
Q
high concentration
A
lower time taken for change
4
Q
Na2S2O3 + 2HCl
A
2NaCl + SO2 + H20 + S
5
Q
marble chip experiment
A
HCl + calcium carbonate chip, recording water volume until reaction is complete every 30s
6
Q
marble chip summary
A
as time increases, reaction rate decreases
