$CH_3-CHOH-COONa+HCl\rightarrow NaCl+CH_3-CHOH-COOH (Z)$$Z\overset{H_2SO_4 dn}{\rightarrow}H_2O+CH_2=CH-COOH (X)$$X+HBr\rightarrow CH_2-CHBr-COOH (Y)$$X+H_2O\overset{H^+}{\rightarrow}Z+HBr$
$CH_3-CHOH-COONa+HCl\rightarrow NaCl+CH_3-CHOH-COOH (Z)$$Z\overset{H_2SO_4 dn}{\rightarrow}H_2O+CH_2=CH-COOH (X)$$X+HBr\rightarrow CH_2-CHBr-COOH $$X+H_2O\overset{H^+}{\rightarrow}Z+HBr$
$CH_3-CHOH-COONa+HCl\rightarrow NaCl+CH_3-CHOH-COOH (Z)$$Z\overset{H_2SO_4 dn}{\rightarrow}H_2O+CH_2=CH-COOH (X)$$X+HBr\rightarrow CH_2-CHBr-COOH
(Y)$$X+H_2O\overset{H^+}{\rightarrow}Z+HBr$