Define Azeotrope mixture

Explanation

A liquid mixture which boils at a constant temperature without any change in its compositions is called an azeotropic solution or azeotrope .
maximum boiling azeotrope : mixture of 80 % H_2 O` & 20 % HCI (b.p = 108 ^@ C` )
Maximum boiling azeotope : mixture of 94.5 % `C_2 H_5 OH & 4.5 5 H_2 O ( b.p = 78.5^@ C)`