liquid methanol, CH3OH is being prepared to be poured into a beaker of water.

(THERE CAN BE MORE THAN ONE ANSWER FOR Q1-3)

1) What intermolecular forces are broken in the methanol when these substances are mixed?

-hydrogen-bonding
-dispersion forces
-dipole-dipole interactions
-ion-ion interactions

2) What intermolecular forces are broken in the water when these substances are mixed?

-hydrogen-bonding
-dispersion forces
-dipole-dipole interactions
-ion-ion interactions

3) What intermolecular forces are formed in the solution when these substances are mixed?

-hydrogen-bonding
-dispersion forces
-dipole-dipole interactions
-ion-ion interactions

for number 1 i think its H-bond, dispersion forces and dipole dipole
for number 2 i think its H-bond, dispersion and ion ion interactions
for number 3 i think its h-bond, dispersion, and dipole dipole

is my thinking correct???? plz help

for all 1, 2, 3, the bonds are H-bond, dispersion forces, and dipole-dipole. yea it's weird.

Your thinking is mostly correct. I will explain each question to help clarify your answers:

1) When methanol (CH3OH) and water are mixed, the intermolecular forces that are broken in methanol are hydrogen bonding, dispersion forces, and dipole-dipole interactions.
- Hydrogen bonding occurs between the electronegative oxygen atom of methanol and the hydrogen atom of another methanol molecule. When mixed with water, these hydrogen bonds are broken as the methanol molecules interact with the water molecules.
- Dispersion forces, also known as London dispersion forces or van der Waals forces, are temporary attractive forces between nonpolar molecules, such as methanol. These forces arise from the random fluctuations of electron distribution, creating temporary dipoles. These dispersion forces are also broken when methanol is mixed with water.
- Dipole-dipole interactions arise due to the polar nature of methanol. The oxygen atom in methanol is more electronegative than the hydrogen atoms, creating a partial negative charge on the oxygen and partial positive charges on the hydrogen atoms. These partial charges interact with the partial charges of other methanol molecules. These dipole-dipole interactions are also broken when methanol mixes with water.

2) In water, the intermolecular forces that are broken when mixed with methanol are hydrogen bonding, dispersion forces, and ion-ion interactions.
- Water molecules form hydrogen bonds between the positively charged hydrogen atom of one water molecule and the lone pair of electrons on the oxygen atom of another water molecule. These hydrogen bonds are broken when water mixes with methanol.
- Dispersion forces, as explained earlier, are temporary attractive forces between nonpolar molecules. While water is polar, it still experiences dispersion forces with methanol due to the random fluctuations in electron distribution in both molecules. These forces are broken when methanol is mixed with water.
- Ion-ion interactions are not typically observed between methanol and water since methanol is not a charged species. However, water can form ion-dipole interactions with ions present in the solution, such as dissolved salts. If the water contains dissolved ions, these ion-ion interactions could also be broken when methanol mixes with water.

3) When methanol and water are mixed, the intermolecular forces formed in the solution include hydrogen bonding, dispersion forces, and dipole-dipole interactions.
- Hydrogen bonding can form between water molecules and methanol molecules. The oxygen atoms in methanol can form hydrogen bonds with the hydrogen atoms in water, and vice versa.
- Dispersion forces still exist between the nonpolar regions of the methanol and water molecules. These forces are weaker than other intermolecular forces but still contribute to the interactions in the solution.
- Dipole-dipole interactions continue to occur between polar regions of both methanol and water molecules, contributing to the overall intermolecular interactions in the solution.

To summarize:
1) Methanol: Broken forces: hydrogen bonding, dispersion forces, dipole-dipole interactions.
2) Water: Broken forces: hydrogen bonding, dispersion forces, ion-ion interactions (if dissolved ions are present).
3) Solution: Formed forces: hydrogen bonding, dispersion forces, dipole-dipole interactions.

I hope this helps clarify your thinking and understanding of the intermolecular forces involved when methanol is mixed with water.

are you in mckeachies

CONFIRMED: H-bond, dispersion forces and dipole-dipole are correct.