Question

Before you start reading this: Please answer the WHOLE question, or do not answer at all!! Tired of people only giving the answer with no explanation.

5. Which of the following is the correct order of boiling points for KNO3, CH3OH, C2H6, Ne?

A. What type of question is this? (What category of chemistry)

B. How did you know. What information is given that indicated this category?

C. What information did you need to solve it. List what is given and how you should go about solving it.

D. Solve the question giving stepwise advice.

E. Give an example of how it could be rewritten into a test question (change the numbers, ask a different type of calculation etc).

E is optional, you would be wonderful if you could do it.

Answer 1

A. This is the question based on the forces of attraction between the molecules.

B. Boiling points are depends on the forces of attractions between the molecule and the order is

KNO3 > CH3OH > C2H6 > Ne

C. In KNO3 there are electro static forces between K+ and NO3- ions in such a way K+ ion surrounded by number of NO3- ions and vice versa.

In CH3OH there are hydrogen bonding is present between molecules.

In C2H6 vanderwaal's force of attractions are present between molecules.

In Ne also there are wean vanderwaals force of attractions are present between Ne atoms

Order of forces of attraction:

Electro static forces of attraction > hydrogen bonding > vanderwaal force of attraction