Some liquids on mixing form ‘azeotropes’. What are ‘azeotropes’ ?
Azeotropes : Binary mixtures having same composition in liquid and vapour phase and boil at a constant temperature.
Write the formula of an oxo-anion of Chromium (Cr) in which it shows the oxidation state equal to its group number.
Explain the following observation :
Most of the transition metal ions exhibit characteristic colour in aqueous solution.
Define the following terms :
(i) Isotonic solutions
(ii) Van’t Hoff factor