KCET2017ChemistryBiomolecules
The standard reduction potential at 298 ~K for the following half cell reaction Z n²⁺(a q)+2 e⁻ Z n(s) ; E^ = -0.762 VC r³⁺(a q)+3 e⁻ C r(s) ; E^ = 0.740 V2 H⁺(a q)+2 e⁻ H₂(g) ; E^ = 0.0 VF₂(g)+2 e⁻ 2 F⁻(a q) ; E^ = 2.87 V Which of the following is strongest reducing agent ?
Options
- A( Z n(s) )
- B( C r(s) )
- C( H₂(g) )
- D( F₂(g) )
Correct answer
A. ( Z n(s) )
Step-by-step solution
The more negative the ( E^ ) value. The more readily the metal loses electrons. The more negative the value the stronger is the reducing agent. Therefore, strongest reducing agent is ( Zn )