Question

dilute hydrochloric acid is added to sodium carbonate .state on characteristics each of the chemical reactions which takes place when

Answer 1

2HCl + Na2CO3= 2NaCl + H2O + CO2
this is neutralization reaction
strong acid reacts with strong base to form a neutral salt.
also, carbon dioxide is liberated.
can be written as-
2HCl + Na2CO3 = 2NaCl + H2CO3

Answer 2

Hello Dear,

Your answer is here.


According to you question→

Dilute Hydrochloric Acid + Sodium carbonate→→Sodium chloride +Carbon Di Oxide + Water


So in an Equation form-

2HCL(dil) + Na₂Co₃ →→2NaCl + Co₂ + H₂O

Since any Metal Carbonate reacts with any of the acid . It produce Salt, Water as well as Carbon Di-oxide . 
So the above resulting reaction further produce Sodium chloride water carbon di-oxide .

So as per reaction, The characteristics are -


1- A Normal Salt of Sodium & Chlorine is produced. 


2- During the reaction The Carbon Di-oxide is evolved with a brisk effervescence & when a moist blue litmus is brought near it, The litmus turns Faint Red .

3- During the reaction, A stable liquid which usually doesn't have any Affect on Litmus paper (Water) is produced. 


I anticipate it help you. 
 
Have a Nice day :-)