Question

Why ethanol and water are miscible yet carbon tetrachloride and water are immiscible?

Answer 1

like disolves like
water and ethanol both are polar therefor they are micible.......
while CCl4 is nonpolar because in this it has symetry and thus its dipole moment is zero and therefor it is not micible.in water...

Answer 2

Answer: The solubility of substances is governed by: Like dissolves like, which states that polar compounds are soluble in polar solvents and non polar compounds are soluble in non polar solvents.

Ethanol with general formula $CH_3CH_2OH$ is polar due to electronegativity difference between hydrogen and oxygen .

$CCl_4$ is non polar in nature due to symmetrical structure as the dipole moments cancel each other and thus is soluble in non polar solvents only.

Water being a polar solvent is able to dissolve ethanol and not carbon tetra chloride which is non polar in nature.