Assignment
PRE-LAB - MOLAR MASS OF ISOPROPYL ALCOHOL USING DUMAS METHOD
PreLabWorksheet
1. The value of the Ideal Gas Constant (R) is:
What are the units of:
P ; Volume ; Temp .
2. Sample experiment:
a. Weight of condensed unknown liquid. 0.1753 g
b. Temperature of H2O bath. 99.0 oC
c. Pressure of gas, barometer. 753.2 mmHg
d. Volume of flask, volume of gas 135 mL
(1) Use PV = nRT to find out the number of moles of unknown liquid.
(2) What is the molar mass of unknown liquid?
Attachment:- Lab.rar