question_answer

How many moles of iodine are liberated when 1 mole of potassium dichromate reacts with potassium iodide?

A)  1                                            

B)  2                       

C)  3                                            

D)  4

Correct Answer: C

Solution :

                 The balanced chemical reaction is Thus, 3 mole  is evolved, when KI reacts with 1 mole of potassium dichromate.