Q18 of 50 Page 1

Carry out the following conversions:

Phenol to benzoquinone.

When phenol is made to react with sulphuric acid in the presence of sodium dichromate, oxidation of phenol take place and phenol is oxidized to benzoquinone. The reaction is as follows:


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17

Calculate the mass of a non-volatile solute (molar mass40 g/mol) which should be dissolved in 114 g octane to reduce its vapour pressure to 80%.

 17

At 300 K, 36 g of glucose, C6H12O6 present per litre in its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of another glucose solution is 1.52 bar at the same temperature, calculate the concentration of the other solution.

 18

Carry out the following conversions:

Propanone to 2-Methylpropan-2-ol.

 18

Carry out the following conversions:

Propene to propan-2-ol.