Answer
1. (a) a synthesis reaction
2. (c) an exchange reaction
Work Step by Step
A synthesis reaction involves two or more atoms bonding together and combining to form a molecule. This occurs in reaction (1), with Hg combining with oxygen to form mercury oxide.
An exchange reaction involves two molecules converting to two different molecules, with each of the first atoms in the original molecules switching the atoms they are partnered with. This occurs in reaction (2), as the hydrogen in HCl switches to bond with the oxygen in water, while the sodium in sodium hydroxide switches to bond with chlorine.
