Practical 19 Effect of concentration on rate 2

GCSE PRACTICAL 19 PRACTICAL – Effect of concentration on rate 2 :         

HazCard : 47A, 95A

Each pupil/group needs: 

•  10 cm3 measuring cylinder 

• 50 cm3 measuring cylinder 

• 150 cm3 beaker 

• 250 cm3 conical flask

• stopwatch 

General apparatus:

• paper for crosses 

•  marker pens for crosses and writing on glassware (Sharpie type) 

Chemicals :

• 2.0mol/dm-3 hydrochloric acid (70 cm3 per group) 

• 0.2mol/dm-3 sodium thiosulfate solution (200 cm3 per group) 

• Distilled water or tape water