d and f BLOCK ELEMENTS

What is the standard reduction potential (E°) for the reduction of MnO₄⁻ to MnO₂ in acidic solution?

• +1.69 V
• +1.52 V
• +0.56 V
• +1.78 V

What is the standard reduction potential (E°) for the reduction of MnO₄⁻ to Mn²⁺ in acidic solution?

• +1.52 V
• +0.56 V
• +1.69 V
• +1.23 V

What type of bonding is primarily responsible for the structure of manganate and permanganate ions?

• p-d π bonding
• Ionic bonding
• Metallic bonding
• Hydrogen bonding

What is the approximate solubility of potassium permanganate in water at 293 K?

• 6.4 g/100 g of water
• 64 g/100 g of water
• 0.64 g/100 g of water
• 640 g/100 g of water

What is the main product formed when potassium permanganate is heated?

• Oxygen
• Hydrogen
• Nitrogen
• Carbon dioxide