Question

Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?

विकल्प

• I₂ (Solid)

• U. V. Light

• Visualisation agent as a component of mobile phase

• Spraying of an appropriate reagent

Answer 1

Visualisation agent as a component of mobile phase

Explanation:

\[\ce{\underset{0.5 g}{O. C} -> \underset{0.4 g}{AgBr}}\]

Molar mass at AgBr = 108 + 88 = 188 u

mol of Br = mo1 of AgBr = `("weight of AgBr")/("molar mass of AgBr") = 0.4/188`

% Br = `"weight of  Br"/"weight of organic compound" xx 100`

`= (0.4/188 xx 80)/0.5 xx 100`

= 34.04 %