Question

Which of the following claims may be made based on your observations? (You will recieve negative points for wrong answers.)

Answer 1

Answer:

D, E and F

Explanation:

About tetrachloro cobalt complexes, the following facts have been observed  

• Color of the tetrachloro cobalt complexes is blue.
• They do not decompose on heating that means synthesis of tetra chloro is endothermic.

About hexa aqua cobalt complexes, the following facts have been observed  

• Color of the hexa aqua cobalt complexes is pink color.
• They decompose on heating and remain stable on cooling that means process of synthesis of hexa aqua cobalt complexes is exothermic.

Based on above, the correct statements are:

The correct is chloro cobalt complex is blue and aqua cobalt  

complex is pink.  

The chloro complex is favored by heating.

If the chloro complex is a product, then the reaction must be endothermic.

The correct options are D, E and F.