Question

The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.

Answer 1

Hey Dear,

◆ Answer with explaination -

• I absolutely agree with the statement that choice of reducing agent depends on thermodynamic factors most importantly free energy change.
• ∆G° of the reducing agent must be more than the oxide it has to reduce. i.e. oxide with more negative ∆G° reduces oxides with less negative ∆G°.

# Examples -

(1) C (more negative ∆G°) can be used as reducing agent to reduce ZnO (less negative ∆G°).

ZnO + C --> Zn + CO

(2) Mg (more negative ∆G°) can be used as reducing agent to reduce Cu2O (less negative ∆G°).

Cu2O + Mg --> MgO + 2Cu

Hope this helps ..

Answer 2

Answer:

: Thermodynamic factor has a major role in selecting the reducing agent for a particular reaction.

• Only that reagent will be preferred which will lead to decrease in the free energy at a certain specific temperature e.g., can reduce ZnO to Zn but not CO. ?(