A small amount of acetonitrile CH$3$CN is dissolved in a large amount of formaldehyde H$2$CO$.$ Imagine separating this process into the four stages sketched below. $($These sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.$)$

A B C D

$->->->$

CH$3$CN H$2$CO solution

Use these sketches to answer the questions in the table below.

The enthalpy of solution $\backslash$Delta Hsoln is positive when CH$3$CN dissolves in formaldehyde. Use this information to list the stages in order of increasing enthalpy.

Would heat be absorbed or released if the system moved from Stage C to D$?$

absorbed

released

neither absorbed nor released

What force would oppose or favor the system moving from Stage C to D$?$ Check all that apply.

none

ionic bonding force

covalent bonding force

metal bonding force

hydrogen$-$bonding force

dipole force

ion$-$dipole force

dispersion forceA small amount of acetonitrile $(C{H}_{3}CN)$ is dissolved in a large amount of formaldehyde $(H_{2}CO).$ Imagine separating this process into the four stages

sketched below. $($These sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.$)$

Use these sketches to answer the questions in the table below.