A small amount of methanol is dissolved in a large amount of water. 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 solution

Use this information to list the states in order of increasing enthalpy.

A<D<B<C

Would heat be absorbed or released if the system moved from Stages A to B

absorbed

Which force would oppose or favor the system moving from Stage A to B? Check all that apply Hydrogen-bonding force Dipole force

Dispersion force

Explanation:A is less than D because nothing is being absorbed or released by water and methanol in A unlike D which has lost some water molecules replaced with methanol,C is greater than all of them because both water and methanol has undergone enthalpy.

Dipole-dipole forces are attractive forces between the positive end of one polar molecule and the negative end of another polar molecules. Therefore it occurs here.

Dispersion forces are induced-dipole, induced-dipole forces that arise from fluctuation in the arrangement of the electrons around a molecule which shows that induced dipole occurs because there’sflunctuation in the arrangement of methanol