( ( When ( ( ( heated or ) exposed ) ( to ( ( an acid ) ( such ( as ( ( acetic acid ) ( -LRB- ( vinegar -RRB- ) ) ) ) ) ) ) ) ) ( , ( ( sodium bicarbonate ) ( ( releases ( carbon dioxide ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (VP (VBN heated) (CC or) (VBN exposed) (PP (TO to) (NP (NP (DT an) (NN acid)) (PP (JJ such) (IN as) (NP (NP (JJ acetic) (NN acid)) (PRN (-LRB- -LRB-) (NP (NN vinegar)) (-RRB- -RRB-))))))))) (, ,) (NP (NN sodium) (NN bicarbonate)) (VP (VBZ releases) (NP (NN carbon) (NN dioxide))) (. .)))
When heated or exposed to an acid such as acetic acid (vinegar), sodium bicarbonate releases carbon dioxide.
(ROOT (S (NP (PRP You)) (VP (MD can) (VP (VB find) (NP (NN sodium) (NN acetate)) (PP (IN in) (NP (DT a) (NN heat) (NN pack))))) (. .)))