Question

For all of the following experiments, under standard conditions, which species could be spontaneously produced?

1. Cl2 gas is bubbled into a solution of NaI.

I2

Na

No reaction

2. Oxygen gas is bubbled through an acidified solution of Fe2+

No reaction

Fe

H2O

3. Crystals of I2 are added to a solution of NaCl.

Na

Cl2

I-

Answer 1

1. Cl2 is strog oxidicing agent than I2. Cl2 is displacement the I2 from it's salt

Cl2 + 2NaI -----------> 2NaCl + I2

I2 is produced

2. Fe^+2 + 4H^+ + O2 --------------> Fe^+3 + 2H2O

     4H^+ O2 +4e^-1 -------------> 2H2O      E0 = 1.23V

      Fe^+3 + e^- ---------------> Fe+2          E0 = -0.036V

   Ecell   = 1.23-0.036 = 1.194 spontaneous reaction

3. Cl2 is strog oxidicing agent than I2. Cl2 is displacement the I2 from it's salt.

I2 is not displacement the Cl2

NaCl + I2 -------------> No reaction