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Q.

When oxalic acid reacts with conc.H2SO4 two gases produced are neutral and acidic in nature respectively. Potassium hydroxide absorbs one of the two gases. The product formed during this absorption and the gas which gets absorbed are respectively :

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a

K2CO3 and CO2

b

KHCO3 and CO 

c

KHCO3 and CO2

d

 K2CO3 and CO

answer is A.

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Detailed Solution

Re-action can be given as,

(COOH)2 conc. H2SO4, heat CO+CO2+H2O

While CO2 is naturally acidic, CO is neutral.

2KOH+CO2K2CO3+H2O

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