Do you think that washing soda na2co3 could be used for the same purpose as baking soda. would na2co3 react with hcl

They can't perform the same function although they react same way with hydrochloric acid

Explanation:

Reaction of NaHCO3 with HCl gives:

NaHCO3(aq) + HCl(aq)→NaCl(aq)+CO2(g) + H2O(l)

NaHCO3(aq) is commonly used as baking powder. To produce cakes and for other baking purposes ,as it can be edible.

Reaction of Na2CO3 with HCl gives:

Na2CO3(aq)+2HCl(aq)→2NaCl(aq) + CO2(g) + H2O(g)

Both compounds react the same way with HCl, as sodium chloride is produce giving off CO2 and water.

it should be repealed cuase its not fair