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Question

Complete the following reaction: Na2CO3(s)+dil.HCl(aq) ___?


A
Na2CO3+H2O+CO2
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B
Na2SO4+H2O
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C
Na2SO4+CO2
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D
Na2SO4+H2O+CO2
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Solution

The correct option is D Na2SO4+H2O+CO2

The reaction between Na2CO3 and dilute HCl is a double displacement reaction.
Na2CO3(s)+2HCl(aq)2NaCl(aq) + H2CO3(aq)
The rapid decomposition of carbonic acid gives out carbon dioxide and water.
H2CO3(aq) CO2(g) + H2O(l)
So,the final reaction will be:
Na2CO3(s)+2HCl(aq) NaCl(aq) + CO2(g) + H2O(l)


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