Question One:

Comment on the solubility of hydrogen ( H2 ) in liquid ammonia ( NH3 ). State whether you expect hydrogen to be highly soluble or almost insoluble, and explain why.

i)Highly soluble due to hydrogen bonding.
ii)Highly soluble due to compatible nature of bonds.
iii)Almost insoluble due to different types of bonding.
iv)Almost insoluble due to differences in density.

Question Two
Comment on the solubility of potassium iodide ( KI) in liquid iodine ( I2 ). State whether you expect potassium iodide to be highly soluble or almost insoluble, and explain why.

i)Highly soluble due to interactions between iodine atoms.
ii)Highly soluble due to compatible nature of bonds.
iii)Almost insoluble due to different types of bonding.
iv)Almost insoluble due to differences in density.

Question One:

iii)Almost insoluble due to different types of bonding.

Question Two
iii)Almost insoluble due to different types of bonding.

Thank you

Question One:

To determine the solubility of hydrogen (H2) in liquid ammonia (NH3), we need to consider the chemical nature of hydrogen and the ammonia molecule.

Hydrogen is a nonpolar molecule, meaning it does not have a significant positive or negative charge at either end. On the other hand, ammonia is a polar molecule with a partial positive charge on the hydrogen atom and a partial negative charge on the nitrogen atom.

When hydrogen bonds with ammonia, the partial positive charge of the hydrogen is attracted to the partial negative charge of the nitrogen, resulting in hydrogen bonding. This strong attractive force leads to the high solubility of hydrogen in liquid ammonia.

Therefore, the correct option is (i) Highly soluble due to hydrogen bonding.

Question Two:
To determine the solubility of potassium iodide (KI) in liquid iodine (I2), we need to consider the chemical nature of potassium iodide and iodine.

Potassium iodide is an ionic compound, where the potassium cation (K+) and iodide anion (I-) are held together by electrostatic forces. In contrast, iodine is a nonpolar molecule comprised of I2.

The solubility of an ionic compound like potassium iodide in a nonpolar solvent like iodine is generally low because the forces holding the ions together are much stronger than the relatively weak intermolecular forces between iodine molecules.

Therefore, the correct option is (iv) Almost insoluble due to differences in density.