Question

The reaction between copper oxide and hydrochloric acid is a:

• A. acid base reaction
• B. replacement reaction
• C. combustion reaction
• D. both $A$ and $B$
  

Answer 1

The correct option is D both $A$ and $B$

The reaction copper oxide and hydrochloric acid is an acid-base reaction due to the hydrogen and oxygen found in the reactants, then forming water ($H_{2}O$). This is also a replacement reaction because the copper ($Cu$) is "swapping out" with the hydrogen ($H$) creating two different molecules.