explain the thermodynamic underpining principles and the processes occuring at a molecular level for these two experiments:
1. a mixture of triethylamine-water, which was partially miscible at room temperature, and it became miscible after cooling.
2. a mixture of hexane-nitrobenzen was at one phase at high temperature, but became partially immiscible when cooling.

yes they ca   is ur ansswerrr

answer///carbon;

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol