Chemistry related question

Question

Which is not a characteristic of ionic substances?

(A) Their reactions are generally extremely slow.

(B) They conduct an electric current when fused.

(C) Those having a common ion exhibit some similar chemical properties.

(D) They lower the vapor pressure of water when dissolved in it (E) They raise the boiling point of water when dissolved in it.

Could you explain why you chose that option?

Answer 1

C, D and E are all characteristic of ionic substances.

A is not. Reactions involving ionic compounds (especially when in aqueous solution) are very fast, such as in neutralization reactions and precipitation reactions.

B is not. It is true that ionic compounds are good conductors of electric current, but ONLY when they are in solution, and not when they exist as solid (fused).