Chemistry
Give reasons for the following:
MgCl2 is soluble in water but insoluble in acetone, while methane is insoluble in water, but soluble in acetone.
Answer
MgCl2 is a electrovalent compound, so it is soluble in water (as water is a polar solvent and has a high dielectric constant) and insoluble in organic solvents like acetone (as organic solvents are non-polar and have low dielectric constant and do not cause dissolution).
Methane is a covalent compound and is insoluble in polar solvents like water and dissolve in organic (non-polar) solvents like acetone.
Related Questions
Give reasons for the following:
Electrovalent compounds are soluble in water, insoluble in organic solvents, good conductors of electricity in molten or aq. solution state, have high melting points and undergo electrolytic dissociation on passage of electric current, while covalent compounds are soluble in organic solvents, insoluble in water, non-conductors of electricity, have low melting points and undergo ionization on passage of electric current.
Give reasons for the following:
NH3 gas a covalent compound does not conduct electricity but it's aq. soln. NH4OH is a weak electrolyte.
Give reasons for the following:
Iron displaces copper from a solution of a copper salt. The reaction is deemed as a redox reaction.
Give reasons for the following:
A non-metallic atom (at. no. 9) forms a molecule of the same, containing a single covalent bond.