Experiment 2: molar mass of a volatile liquid purpose: pressure from in hg to atm, ml to l and determination of the molar mass finally, calculate the average molar mass for the two trials, the error and percent error as designated on p 27. Determination of the molar mass of volatile liquids lab video explanation nathanjones0117 loading unsubscribe from nathanjones0117 determining the molar volume of a gas lab video explanation - duration: 21:23 nathanjones0117 18,694 views. Molecular weight determination of isopropyl alcohol using the simplified dumas method explore the molar mass of the volatile liquid by the dumas method a simple method for determining the molecular weight of. Molar mass determination of a volatile liquid the experimental determination of the molar mass of gases and vapors is one important application of the ideal determine the mass of the flask filled with water, then determine the temperature of the water used to fill.
Molar mass determination of a volatile liquid a student lab partner: a friend ch 222 lab manual page 23 february 11, 2003 purpose: to determine the molar mass of an unknown liquid. Condensing the liquid in the dumas method calculate mass air at ambient p and t in your flask question about determining the molar mass of a volatile liquid by dumas method lab dumas method in chemistry more questions. The purpose of this lab was to find the molar mass of a volatile liquid through the use of the formula mw=drt/p trial 2 mass of flask and foil liquid # observations temperature of read the water level and record (ours was 314 ml) calculate the molar mass. Molar mass of a volatile liquid 3 use the calculations from questions 1 and 2 above, along with the temperature of the boiling water bath and the barometric pressure of the room, to calculate the molar. Chem-a #3: in this experiment, you will evaporate a sample of a liquid substance and measure certain physical properties of the substance as it condenses determine the molar mass of an unknown liquid. Ideal gas law: molecular weight of a vapor purpose: in this experiment you will use the ideal gas law to calculate the molecular weight of a volatile liquid compound by measuring the mass, volume mass of the vapor, calculate the molar mass, or molecular weight.
How do i determine whether a particular volume of volatile liquid is sufficient to determine its molar mass for example, 400 ml of methanol and its density is 0796 g/ml at 392 k, 1037 atm, flask has a volume of 150 ml i'm pretty sure that when the gas evaporates and fills the. Okay so im doing this ap/ib chemistry lab and it is having us determine the mass of a volatile liquid ie ethyl alcohol acetone ect it tells us to use pv=nrt to determine the molar mass but how would pv=nrt give the molar mass this is all the info i have: temp of water bath. Formula weight from gas density chemical and physical methods for determining formula weights for determining the formula weight of a volatile liquid is a case in point this results in an apparent mass of liquid. Molecular weight determination of an organic liquid i objectives in this experiment the molecular weight of a volatile, unknown organic liquid will be determined from this information and quantitative analysis data mass of liquid (g. The objective of this lab is to experimentally determine the molar mass of an unknown and volatile liquid by narendran in types research science. In this experiment, to determine the molecular mass of a volatile liquid, a small amount of the liquid is placed into a flask the flask is closed with foil, leaving a small hole, and then heated in boiling water calculate the molar mass of the liquid.
Dumas method of determining molar mass of a volatile liquid debate and discussion of any biological questions not pertaining to a particular topic moderators: leonid, amiradm, bioteam 12 posts page 1 of 1 darwin420 coral posts: 170.
The molar mass of the volatile liquid is then determined from equation 3 using the mass of the condensed vapor, the volume of the pipet calculate the molar mass of methyl alcohol using equation 3 and compare this value to the actual molar mass of methyl alcohol. The relative molecular mass of volatile liquids objective the objective of this lab is to experimentally determine the molar mass of an unknown and volatile liquid. Experiment 10b fv 3-31-16 determining the molar mass of a gas materials: dry 250 ml erlenmeyer flask, piece of foil (~3 x 3) discussion: in this experiment, the dumas method will be used to determine the molar mass of a volatile liquid.
Molar mass of a volatile liquid by the dumas method objectives background: ideal gas law procedure overview objectives determine the molar mass of a volatile liquid. Determination of the molecular mass of a volatile compound objective: to calculate the molar mass of a volatile unknown compound from the mass of to determine the mass of the volatile liquid at a known volume. Molar mass of a volatile liquid the molar mass of a volatile liquid will be determined by measuring the mass of vapor of the liquid needed to fill a flask of known volume at a particular temperature and. Determination of the molar mass of gases and volatile liquids inquiry guidance and ap chemistry curriculum alignment introduction students will gain further understanding of the gas laws when applied to determine the molar mass of gases and volatile. Transcript of molar mass of a volatile liquid 7 the objective of this lab was to use the ideal gas law by obtaining the variables through the lab to determine the molar mass, and thus the identity of an unknown solution 4. Molar mass determination of a volatile read more about flask, vapor, molar, determine, volume and ideal.