Did an oxidation-reduction reaction occur in the reaction between copper sulfate and sodium sulfide?
CuSO4 + Na2S → CuS + Na2SO4
A.
This is a redox reaction because copper gained electrons.
B.
This is a redox reaction because sodium lost electrons.
C.
This is a redox reaction because sulfur gained electrons.
D.
This is not a redox reaction because no electrons were transferred.
E.
This is not a redox reaction because oxygen did not gain electrons.
