Question

Study the flow chart below and answer the questions that follow.

1. Write the formula of the anion present in solid N. 
2. Metal oxide L is black in colour. Identify:
   1. Cation present in solid N. 
   2. Metal oxide L. 

Answer 1

1. NO_-3
2.  
   1. Copper (II) or Cu²⁺
   2. Copper (II) oxide or CuO.