What Solvents Have a Molar Mass Around 505.33 g/mol?

  • Thread starter Thread starter kevin0788
  • Start date Start date
  • Tags Tags
    Mass Point
AI Thread Summary
The discussion centers on identifying solvents with a molar mass around 505.33 g/mol, derived from a freezing point depression lab experiment. The original poster seeks assistance in finding known solvents that match this molar mass. A response critiques the reliability of using molar mass alone to determine a substance's identity, suggesting that this method can lead to inaccuracies without additional context. The conversation highlights the challenges of identifying unknown solvents based solely on molar mass. Accurate identification typically requires more comprehensive analysis beyond just molar mass.
kevin0788
Messages
6
Reaction score
0

Homework Statement



ok, so i had to do this determining molar mass by freezing point depression lab where we had to find the molar mass of an unknown solvent and then try to figure out the identity of the unknown solvent. i calculated my experimental molar mass to be 505.33 g/mol. does anybody know of any solvents that would have a molar mass of anywhere near that?
 
Physics news on Phys.org
Molar mass of solvent or molar mass of solute?

Figuring out identity of the substance based on molar mass is absurd. When you have several known substances to select from, that can make sense, but as a general method it is a sure way of elaborate failure.

--
methods
 
Thread 'Confusion regarding a chemical kinetics problem'
TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...

Similar threads

Back
Top