Question

Which type of compound is an electrolyte if it is soluble in water?

a) an ionic compound soluble in water

b) a nonpolar molecular compund not soluble in water

c) a polar molecular covalent compound that is not a strong acid and does not ionize in water

2. When an electrolyte is dissolved in water, which of the following can carry the electric current in the aqueous solution?

a) water molecules b) cations c) anions d) both cations and anions

3. Which of the following are weak electrolytes?

a) molecular covalent compounds that are weak acids and ionize slightly in water

b) molecular covalent compounds that are weak bases and ionize slightly in water

c) both of these

Answer 1

Which type of compound is an electrolyte if it is soluble in water:

a) an ionic compound soluble in water [correct answer, strong electrolyte ionizes completely into cation and anion in water]

2. When an electrolyte is dissolved in water, which of the following can carry the electric current in the aqueous solution:

d) both cations and anions [correct answer, The dissolved electrolyte separates into cations and anions in the solvent. Although this solution is electrically is neutral. But, when an electric potential is applied to such a solution, the cations of the solution are drawn to the electrode that has an abundance of electrons, while the anions are drawn to the electrode that has a deficit of electrons. The movement of anions and cations in opposite directions within the solution cause to a current.]

3. Which of the following are weak electrolytes:

c) both of these [correct answer]