Colligative Properties_Lab: Boiling Point Elevation

[@melissaclaypool6807]

I love that he says kiddos, so welcoming

[@atadali6199]

When continuous long time boiling and evaporating causes continuous liquid decrease, what is a good way of continuous auto refill?

[@ronlal652]

using 11.57g of NaCl in 100g of water based on calculations should be around 102 C.I used delta T is KbMi

[@trending7928]

i love it thanks guys

[@MrDanjiree]

thanks this really helped

[@shanthala1345]

Thank you sir

[@shivamawasthi765]

why you have taken sodium chloride(Nacl) only 11 grms.

[@cloroxbleach4411]

a bit llate but prob part of the lab instructions

[@shivamawasthi765]

@@cloroxbleach4411 thnx for the reply its been after 4 yrs though

[@robbertbinneveld5866]

I have calculated the boiling point elevation from your experiment using the following data,
Ebullioscopic constant of water: Kb = 0.521 C/m
van t hoff's factor for NaCl: i = 2.0
from your experiment I calculated:
m = 11.57/(58.44*0.100) = 1.98 mol NaCl/kg H2O
Hence the boiling point elevation in theory is:
dT = i*kb*m = 2.0*0.521*1.97 = 2.1 C
however in your experiment the elevation is:
104 - 100 = 4 C
Do you know why this happens? We have a similar issue in our lab..

[@harshmaheshwary]

+Robbert Binneveld i think this happens because of the impurities in the NaCl as well as the error in the thermometer

[@shivamep-8757]

This cannot be done by taking the normal boiling point 100°....as the conditions are not same in which 100°is experimentally determined.....so first we here again have to find the boiling point of water(acc to exp) than we can do calculation relative to that boiling point of water that we have measured...then the calculation will be much closer..

[@herminioflores9037]

did you record this video with a potato?

[@airdropping3144]

why was this in my recommended?

[@ijustc0mment]

you need to be a scientist

[@Reena_007]

Thank you sir