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Give equations for the following: (i) Preparation of CO2, (ii) Basic properties of Na2CO3, (iii) Formation of acetylene.

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Give equations for the following:

(i) Preparation of CO2, 

(ii) Basic properties of Na2CO3, 

(iii) Formation of acetylene.

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(i) CaCO3 + 2HCl → CaCl2 + CO2 + H2O 

(ii) Na2CO3 + 2H2O → 2NaOH + H2CO3 

(iii) CaC2(calcium carbide) + 2H2O → Ca(OH)2 + C2H2(Acetylene)

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