8- Which of the following is an elimination reaction? (LO.2) a. C_(2)H_(2)(g)+H_(2)(g)arrow C_(2)H_(4)(g) b. CH_(3)CH_(2)CH_(2)OH(l)arrow CH_(3)CHCH_(2)(g)+H_(2)O(l) c. C_(3)H_(6)(g)+HCl(g)arrow C_(3)H_(7)Cl(l) d. CH_(3)OH(aq)+HCOOH(aq)arrow C_(2)H_(5)-O-CHO(l)+H_(2)O(l) e. 2C_(2)H_(2)(g)+5O_(2)(g)arrow 4CO_(2)(g)+2H_(2)O(g)

The correct answer is option d.<br /><br />In an elimination reaction, a molecule loses a small molecule or ion, resulting in the formation of a new molecule with a double bond or triple bond. In option d, the reaction involves the reaction of methanol (CH3OH) with formic acid (HCOOH) to form a formate ester (C2H5-O-CHO) and water (H2O). This is an example of an esterification reaction, which is a type of elimination reaction.