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Oxalic acid with zinc and H2SO4 gives: A. Glycol B. Glyoxal C. Glyoxalic acid D. Glycolic acid

Oxalic acid with zinc and H2SO4 gives:
A. Glycol 
B. Glyoxal
C. Glyoxalic acid 
D. Glycolic acid 

Grade:12th pass

2 Answers

Vikas TU
14149 Points
4 years ago
Dear student 
Oxalic acid with zinc and H2SO4 gives Glycolic acid . 
So, D would be the correct ans 
Hope this helps 
Good luck 
Cheers 
Arun
25750 Points
4 years ago
At first you need to know what happens when the first 2 products are heated, only then you can know what gasses pass trough the NaOH solution.
And that is: The weak and hydrated oxalic acid gets dehydrated& decomposed:
(COOH)2. 2H2O + conc. H2SO4 + heat→ CO(gas) + CO2(gas) + [H2SO4.3H2O]
 
Hence glycolic acis is formed

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