Which of the following can't be used as X in the equation given below?
Acid + X Salt + CO2 + Water
Acid + X Salt + CO2 + Water
- Metal hydrogen carbonates
- Metal carbonates
- Both (1) and (2)
- Metal hydroxides
The Correct Option is C
Solution and Explanation
The given reaction is: \[ \text{Acid} + X \rightarrow \text{Salt} + CO_2 + \text{Water} \] For this reaction, X can be a metal carbonate or a metal hydrogen carbonate, as both of these react with acids to release carbon dioxide, salt, and water. However, metal hydroxides do not release carbon dioxide when they react with acids; instead, they form salt and water. Therefore, metal hydroxides cannot be used as X in this reaction.
The correct option is (C): Both (1) and (2)
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