Which redox reaction would most likely occur if zinc and copper metal were added to a solution that contained zinc and copper ions?
Click for a reduction potential chart
A. Cu2+ + Zn → Cu + Zn2+
O B. Cu + Zn → Cu2+ + Zn2+
C. Cu + Zn2+ → Cu2+ + Zn
O D. Cu2+ + Zn2+ → Cu + Zn

if you're asking what comes out, it's steam.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.