Question

Which of the following statements concerning solubility is/are CORRECT?

1. Ionic compounds composed of Group 1A metal ions and halide ions, such as NaCl, are insoluble in nonpolar solvents.

2. The solubility of the halogens (Cl2, Br2, and I2) in polar solvents is greater than their solubility in nonpolar solvents.

3. The solubility of polar molecules, such as sugar, in polar solvents is generally greater than their solubility in nonpolar solvents.

a. 1 only

b. 2 only

c. 3 only

d. 1 and 3

e. 1, 2, and 3

Answer 1

Statement 1 is correct as ionic compounds being polar, are insoluble in non polar solvents.

Statement 2 incorrect because halogens are covalent compounds and so they are less soluble in polar solvents and more soluble in non polar solvents.

Statement 3 is correct because sugars are highly polar compounds and are highly soluble in polar solvents and are less soluble in non polar solvents.

So, the statements 1 and 3 are correct and the correct option is (d) 1 and 3.