Conductimetric titration of a saline solution
Ten millilitres of saline diluted ten times, sixty millilitres of water so the cell is covered, and silver nitrate at 0.0100 mol/L in the burette. Each silver ion removes a chloride ion as white silver chloride; the conductivity drifts down, then climbs once silver is in excess. The break is the equivalence, and it gives the salt content of the bottle.
Loading the laboratory
Each step has a button in the rail; the bench makes the gesture. You can also grab the bottle and carry it yourself. Click a name or an object to look closer, double-click the bench to step back. Slide the view with shift + scroll, the arrow keys, a right-button drag or two fingers.
Step 1 of 13
- 1Get ready
Goggles and gloves: silver nitrate stains skin black and irritates the eyes.
- 2Fill the burette
- 3Read the conductivity
- 4Predict the curve
- 5Deliver 8 mL
- 6What do you see at 8 mL?
- 7Read the conductivity at 8 mL
- 8Go to 25 mL
- 9Read the shape
- 10Read Veq on the graph
- 11Back to the label
- 12Why those slopes?
- 13Label checked