Final answer:
The Dumas Method is a technique used to determine the molar mass of a volatile liquid. It involves heating the liquid to convert it into a gas, measuring the gas volume at STP, and calculating the moles and molar mass of the liquid.
Step-by-step explanation:
The Dumas Method is a technique used to determine the molar mass of a volatile liquid. Here is a summary of the steps involved:
- First, a sample of the liquid is heated in a flask with a tiny hole at the top. This converts the liquid into gas.
- The gas is then collected and its volume is measured at standard temperature and pressure (STP).
- The moles of the gas are calculated using the ideal gas equation.
- Finally, the molar mass of the volatile liquid is determined by dividing the mass of the sample by the number of moles.
This method is based on the principles of stoichiometry and the molar volume of a gas at STP. It provides an approximate value for the molar mass of the volatile liquid.