Question:
The gas evolved on heating alkali formate with soda-lime is
The gas evolved on heating alkali formate with soda-lime is
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Alkali formates on heating with soda lime produce hydrogen gas and carbonate salt.
Updated On: Jan 3, 2026
- CO
- CO\(_2\)
- Hydrogen
- water vapor
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The Correct Option is C
Solution and Explanation
Step 1: Identify alkali formate.
Alkali formate is \(HCOONa\) or \(HCOOK\).
Step 2: Understand soda lime.
Soda lime is a mixture of NaOH and CaO.
It is generally used for decarboxylation.
Step 3: Reaction of alkali formate with NaOH (soda lime).
When heated, alkali formate decomposes giving hydrogen gas:
\[ HCOONa + NaOH \xrightarrow{\Delta} Na_2CO_3 + H_2 \]
Step 4: Conclusion.
Thus the gas evolved is hydrogen.
Final Answer:
\[ \boxed{\text{(C) Hydrogen}} \]
Alkali formate is \(HCOONa\) or \(HCOOK\).
Step 2: Understand soda lime.
Soda lime is a mixture of NaOH and CaO.
It is generally used for decarboxylation.
Step 3: Reaction of alkali formate with NaOH (soda lime).
When heated, alkali formate decomposes giving hydrogen gas:
\[ HCOONa + NaOH \xrightarrow{\Delta} Na_2CO_3 + H_2 \]
Step 4: Conclusion.
Thus the gas evolved is hydrogen.
Final Answer:
\[ \boxed{\text{(C) Hydrogen}} \]
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