With reference to ionic compounds, consider the following statements:
1. 1. Ionic compounds are insoluble in alcohol.
2. 2. Ionic compounds in the solid state are good conductors of electricity.
Which of these statements is/are correct?
Correct Answer: Option A
Explanation
1. The question asks to verify two statements about ionic compounds.
2. Statement 1: Ionic compounds are insoluble in alcohol. This is generally true. Ionic compounds consist of charged ions held by strong electrostatic forces. They tend to dissolve well in polar solvents like water, which can solvate the ions. Alcohol (like ethanol) is less polar than water, and its ability to dissolve most ionic compounds is limited. Therefore, they are often considered insoluble or poorly soluble in alcohol.
3. Statement 2: Ionic compounds in the solid state are good conductors of electricity. This is false. In the solid state, the ions in an ionic compound are held rigidly in a crystal lattice and are not free to move. Since electrical conductivity requires the movement of charged particles, ionic compounds do *not* conduct electricity in the solid state. They become good conductors only when molten (ions are free to move) or dissolved in a polar solvent like water (ions are dissociated and free to move).
4. Based on the analysis, Statement 1 is correct and Statement 2 is incorrect.
5. The correct option is (A) 'Only 1'.
Master UPSC Revision
Get 10,000+ topic-wise MCQs, spaced repetition, daily CSAT challenges, and detailed performance analytics.
Coming Soon to Play Store