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Carboxylic acids And Acid Derivatives
Question
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Give one good chemical test to distinguish between the following pairs of compounds:

(i) 1 Propanol and 2 Propanol.
(ii) Oxalic acid and benzoic acid.

Answer

i)  Iodoform Test: It helps to distinguish these, 2-Propanol contains the grouping - CH COCH3. So when it is warmed with I2/NaOH, iodoform, (yellow ppt) is formed. 1-Propanol does not contain this grouping. So it does not give this test.

(ii) Oxalic acid decolourises a warm solution of acidified KMn04 solution.

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Some More Questions From Carboxylic acids And Acid Derivatives Chapter

When acetic acid is reacted with calcium hydroxide and the product is distilled dry, the compound formed is:

Write the structures of all enantiomers possible for lactic acid.

Carry out the following conversions:  

(i) Methyl chloride to acetic acid.

(ii) Benzene to benzoic acid

(iii) Ethanol to acetone.

Give balanced equations for the following:   

(i) Glycerol is heated with oxalic acid at 110° C (383K).

(ii) Acetamide is heated with sodium hydroxide.

(iii) Acetone reacts with hydrogen in the presence of heated copper.

Draw the isomers of 2-hydroxy propionic acid. 

Give an example (equation) for each of the following name reactions:    

(i) Aldol condensation.

(ii) Reimer-Tiemann reaction.

(iii) Rosenmund’s reductions.

Give one example for each of the following name reactions:

(i) Hell Volhard Zelinsky (HVZ) reaction,
(ii) Clemmensen’s reduction.

Give one good chemical test to distinguish between the following pairs of compounds:

(i) 1 Propanol and 2 Propanol.
(ii) Oxalic acid and benzoic acid.