Question

Which solvent water or carbon tetrachloride would you choose to dissolve each of the following?(a) KrF₂

(b) SF₂

(c) SO₂

(d) CO₂

(e) MgF₂

(f) CH₂O

(g) CH₂=CH2

Short answer

In this question “like dissolves like” concept is applied

(a) KrF₂ is soluble in carbon tetrachloride.

(b)SF₂ is soluble in water.

(c) SO₂ is soluble in water.

(d) CO₂ is soluble in carbon tetrachloride.

(e) MgF₂ is soluble in carbon tetrachloride.

(f) CH₂O dissolves in water.

(g) Ethene is soluble in carbon tetrachloride.

Step-by-step solution

Explanation for part (a)

KrF₂ is a nonpolar solute and carbon tetrachloride nonpolar solvent. As a nonpolar solute dissolves in a nonpolar solvent. So it can be said KrF₂ is soluble in carbon tetrachloride.

Explanation for part (b)

SF₂ is a polar molecule and water is a polar solvent. As polar molecules dissolved in a polar solvent therefore, SF₂ dissolves in water.

Explanation for part (c)

SO₂ is a polar molecule and water is a polar solvent. As polar molecules dissolved in a polar solvent therefore, SO₂ dissolves in water.

Explanation for part (d)

CO₂ is a non-polar molecule with a bent structure dissolved in the non-polar solvent carbon tetrachloride.

Explanation for part (e)

MgF₂ is soluble in carbon tetrachloride. MgF₂ is a non-polar molecule so it dissolves in the non-polar solvent.

Explanation for part (f)

CH₂O dissolves in water.

CH₂O is a polar molecule dissolved in a polar solvent dissolved in water.

Explanation for part (g)

Ethene is soluble in carbon tetrachloride. Ethene is a non-polar molecule dissolved in a non-polar solvent.