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JIPMER2016ChemistryElectrochemistry

Choose the correct statement from the following.

Options

  1. AThe greater positive value of E_ OP ^ indicates greater reactivity of metal
  2. BF ⁻ is strong oxidant whileCu2+ ²⁺ is weak reductant
  3. CThe metals placed above Mg in the electrochemical series do not decompose water at ordinary temperature
  4. DOxides of Hg do not decompose on heating

Correct answer

A. The greater positive value of E_ OP ^ indicates greater reactivity of metal

Step-by-step solution

According to the applications of electrochemical series on moving from top to bottom in electrochemical series, the values of E_ oP ^ of metals decrease, and thus reactivity of metals of E_ op ^ indicates greater reactivity of metal. On the other hand, F ⁻ is poor reductant while Cu ²⁺ is strong oxidant. The metals placed above Mg in ECS decompose water at ordinary temperature to liberate H ₂ . Oxides of Hg decomposes on heating.

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