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One of the nicest application of reducti...

One of the nicest application of reduction potential is the prediction of the products of reaction involving elements having several oxidation staes. Consider the reaction of iodine with permanganate in acid sollution. The pertinent diagram is shown below

When the reaction between `I^(-)` and `MnO_(4)^(-)` carried out with iodide in excess, then the productes of the reaction are

A

`Mn^(+2)`

B

`I_(3)^(-)`

C

`MnO_(2)`

D

`MnO`

Text Solution

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The correct Answer is:
B
As, `MnO_(4)^(-)`oxidizes `I^(-)` to `I_(2)` it will be absorbed by `I^(-)` present in the mixture forms `I_(3)^(-)`
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Read the following paragraph and answer the questions given below , Stable equilibrium is of various type . Mechanical equilibrium is achieved when all particles are at rest and total potential energy of the system is minimum . At any stage where particles are at rest but the system is not at stabel equilibrium as it can reduce its potential energy by reverting to another position, is called metastable equilibrium . Thermal equilibrium is result from the absence of temperature gradients in the system. chemical equilibrium is obtained when no further reaction occurs between reacting substances, i.e forward and reverse rates of reaction are equal. when steam with solid iron at high temperature Fe_3O_4(s) and hydrogen gas are produced . But the reaction never goes to completion. this is because as the products are formed the reaction proceeds in reverse direction and when rate of reverse reaction is equal to rate of forward reaction , the concentration of reactants and products become constant and equilibrium is reached. The primary objective of the passage is

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