Register to reply

Raoult's Law, Finding an unknown compound

by Glitche
Tags: boin, chemistry
Share this thread:
Glitche
#1
Feb7-12, 12:15 AM
P: 4
1. A 1.00m aqueos solution of compound X had a boiling point of 101.04 Celsius. Which one of the following could be compound X? The boiling point elevation constant for water is 0.52

A) CH3CH2OH
B) KCL
C) C6H12O6
D) NA3PO4




ΔTb=(Kb)(m)




1: identify the change in bp temperature. in this case, it's 101.04-100 = 1.04 degrees C.
2. divide this change by your bp elevation constant. 1.04/0.52 = 2

so now I think that means that two different molecules were added. My guess is it was KCl (potassium chloride). but of course, I'm not entirely sure =/

Can someone help me out?

1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution
Phys.Org News Partner Science news on Phys.org
Bees able to spot which flowers offer best rewards before landing
Classic Lewis Carroll character inspires new ecological model
When cooperation counts: Researchers find sperm benefit from grouping together in mice
Borek
#2
Feb7-12, 03:08 AM
Admin
Borek's Avatar
P: 23,395
Looks OK to me.
Glitche
#3
Feb7-12, 02:31 PM
P: 4
Thanks Borek!


Register to reply

Related Discussions
Finding the equivalent of a compound Biology, Chemistry & Other Homework 1
An Unknown Compound Biology, Chemistry & Other Homework 7
Finding the moment of inertia of a compound object Introductory Physics Homework 3
Finding emprical formula of compound CHON Biology, Chemistry & Other Homework 1
Need help finding the formula of a compound Chemistry 4