In the following reaction sequence, the correctstracture ofX, Y and Z are :H-C-=C-COOHoverset(HgSO_(4)//H_(2)SO_(4)//H_(2)O)underset((1))to (X) overset("Heating")underset((2))to(Y) overset(I_(2)//NaOH)to (Z)+CHI_(3)

In the following reaction sequence, the correctstracture ofX, Y and Z

1.	In the following reaction sequence, the correctstracture ofX, Y and Z are :H-C-=C-COOHoverset(HgSO_(4)//H_(2)SO_(4)//H_(2)O)underset((1))to (X) overset("Heating")underset((2))to(Y) overset(I_(2)//NaOH)to (Z)+CHI_(3)
Answer» `{:(H_(2)=CH-COOH" ",CH_(3)-underset(OH)underset(\|)(CH)-COOH"",underset(COONa)underset(\|)(COONa)):}` `{:(CH_(3)=underset(O)underset(\|\|)(C)-COOH"", CH_(3)=CH-O" ", HCOONa):}` `{:(O-CH-CH_(2)-COOH" ",CH_(3)-CH=O" ",HCOONa):}` SOLUTION :`X=H-overset(O)overset(\|\|)(C)-CH_(2)-overset(O)overset(\|\|)(C)-OH `,Y=H-overset(O)overset(\|\|)(C)-CH_(3)Z=HCOONa` (`beta-`keto carbozylic acid under GO DECARBOXYLATION on HEATING Followed by Iodoform reaction)