Chemistry
Grade-10
Easy
Question
Which of the following reaction will result in CO2 release?
- NaOH + Na2CO3
- HCl + Na2CO3
- HCN + Na2CO3
- NH3 + Na2CO3
Hint:
Acid and basic salt react to give carbon dioxide.
The correct answer is: HCl + Na2CO3
NaOH + CO2 
Na2CO3 + H2O
HCl + Na2CO3 NaCl + H2O + CO2
HCN + Na2CO3 Not much feasible reaction
NH3 + Na2CO3 NaNH3 + CO3
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