Carbon dioxide can be produced by
A.Lime and baking soda
B.Vinegar and baking soda
C.Orange juice and lime
D.Baking soda and baking powder

Dear Student,
Option (A) Both A and R are true and R is the correct explanation of A.
Consider a precipitation reaction:
AgNO3(aq) + NaCl(aq) AgCl(s)+ NaNO3(aq)
AgNO3, NaCl, and NaNO3 are soluble salts but AgCl is a precipitate. Thus precipitation reactions produce an insoluble salt.
And this reaction is also an example of a double displacement reaction because Ag+ ion displaces Na+ ion from its salt solution to form a precipitate and the same is true for Na+ ion.

Regards

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