Ethanoic acid was added to sodium bicarbonate sol. And the gas evolved was tested with a
burning splinter. The following four observations were reported:-
1) the gas burns with the pop sound and the flame gets extinguished.
2) the gas does not burn out but the splinter burns with a pop sound
3) the flame extinguishes and the gas does not burn
4) the gas burns with a blue flame and the splinter burns brightly.
The correct observation is reported in:-
i) 1
ii) 2
iii) 3
iv) 4
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Verified answer
Heya friend,
Let's see this reaction :-
[tex]CH_{3} COOH + NaHCO_{3} ---> CH_{3}COONa + H_{2}O + CO_{2}[/tex]
(sodium ethanoate)
Now,
We can see,
the gas evolved is [tex]CO_{2}[/tex] , which does not support combustion and it does not even burn with a pop sound.
So,
the correct observation is :
3) the flame extinguishes and the gas does not burn
Thanks !
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