Chemistry Dynamic Lab Manual
A demonstration version of our DLM is now available. It gives a brief overview of the system, allowing the user to experience a small part of our powerful web-based system for teaching chemistry. There are also some cool simulations to play with below.
Use the simulation below to carry out a double distillation of methanol from B1 into B2, then into B3:
- Evacuate the system apart from B1
- Close S3 and distil methanol from B1 to B2 using the warm and cold baths.
- Close S1 and open S3 and distil methanol from B2 to B3.
Then, in the simulation, measure the vapour pressure as a function of temperature:
- With S3 shut, use the hotplate to heat the water bath. Note down the temperature and the transducer reading.
Use the simulation below to calibrate a calorimeter
- Fill the calorimeter with a known amount of deionised water and connect the heater leads to the power supply. Adjust the vacuum tap to an air flow rate of around 4 to 5 l min-1 and switch on the power supply, adjust the current to about 1.3 A, and immediately start the stopwatch.
- Measure the temperature at 1-minute intervals until the temperature rise is about 10°C. Make sure you stir the water throughout. Note the current and voltage supplied to the heater. Switch off the power unit and measure the temperature at 2-minute intervals for about 30 minutes, maintaining the air flow.