Short Answer TypeArrange the following compounds in an increasing order of their solubility in water:
C6H5NH2, (C2H5)2NH, C2H5NH2Explain the following giving one example for each:
(i) Reimer-Tiemann reaction.
(ii) Friedel Craft’s acetylation of anisole.
How would you obtain
(i) Picric acid (2, 4, 6-trinitrophenol) from phenol,
(ii) 2-Methylpropene from 2-methylpropanol?
What is essentially the difference between α-form of glucose and β-form of glucose? Explain.
The α-form of glucose and β-form of glucose can be distinguished by the position of the hydroxyl group on the first carbon atom.
In open chain α-glucose, the hydroxyl group on the first carbon atom is towards the right whereas, in the closed ring α-glucose, the hydroxyl group on the first carbon atom is below the plane of the ring.
On the other hand, in open chain β-glucose, β-glucose, the hydroxyl group on the first carbon atom is towards the left whereas, in the closed ring β-glucose, the hydroxyl group on the first carbon atom is above the plane of the ring.
The structures of open and cyclic α-form and β-form of glucose can be drawn as follows.
Long Answer Type(a) Differentiate between molarity and molality for a solution. How does a change in temperature influence their values?
(b) Calculate the freezing point of an aqueous solution containing 10.50 g of MgBr2in 200 g of water. (Molar mass of MgBr2 = 184 g) (Kf for water = 1.86 K kg mol-1)
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