how many 1/2 teaspoons of salt will dissolve in 1/2 cup room temp. water and how...

how many 1/2 teaspoons of salt will dissolve in 1/2 cup room temp. water and how many in boiling water and why?

Expert Solution

In general, 1/2 cup is 100 mL and maximum amount of salt (considering NaCl) dissolved in 100mL water is 36 gram at room temperature. One teaspoon is equal to 5 gram of NaCl, meaning 7.2 teaspoons of NaCl maximally can be dissolved in water at the room temperature.

At boiling water (100 ^oC) solubility of NaCl is arround 38.99 g in 100 mL water (arround 7.8 teaspoon of salt).

Intermolecular forces are those forces that hold molecules together as solids and liquids. The cations and anions of an ionic compound are held together in the solid state by complexing with many ions of the opposite charge. Hydrogen bonding gives water many of its extraordinary properties and salts dissolve in water because their charges line up with the partial charges on water. Water molecules surround each ion, resulting in a three dimensional “solvent cage” around the charged particle. The heating energy helps in dissociation of opposite charges.

queen_honey_blossom answered 3 months ago

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