Redox Reactions...

The following question has four choices out of which ONLY ONE is correct.
In acidic medium, dichromate ion oxidizes ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is 294 g, its gram equivalent weight is

The following question has four choices out of which ONLY ONE is correct.
If equal volumes of 1 M KMnO₄ and 1 M K₂Cr₂O₇ solutions are allowed to oxidize Fe (II) to Fe (III) in acidic medium, then Fe (II) oxidization will be

The following question has four choices out of which ONLY ONE is correct.

Consider the following half reactions:

Zn²⁺ ––>Zn(s); E₀ = - 0.76V
Cu²⁺ ––>Cu(s); E₀ = - 0.34V

Which of the following reactions is spontaneous?

In the balanced equation H₂SO₄ + x HI ––>H₂S + y I₂ + z H₂O, what are the values of x, y and z?

Redox reaction between copper and aqueous solution of silver nitrate happens when copper rod is dipped in silver nitrate solution. What happens in the final stage?

The mass of H₂O₂ that is completely oxidised with 31.2 g of KMnO₄ (molar mass = 158 g mol^–1) in acidic medium is

The formation of sodium chloride involves two half reaction, which clearly show involvement of electrons.
2 Na (s) → 2 Na + (g) + 2e Cl2 (g) + 2e → 2 Cl (g)
Sum of the half reactions gives
2 Na(s) +Cl2 (g) → 2 Na+ Cl (s) or 2 NaCl (s)

In terms of electron-transfer change, name the oxidising agent(s) and reducing agent(s)

HBr and HI can reduce sulphuric acid. HCl can reduce KMnO₄ and HF can reduce

What is the reduction product in the reaction 2KMnO₄ + 16HCl ––>5Cl₂ + 2MnCl₂ + 2KCl + 8H₂O?