Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below :
$B r O_{4}^{-} \overset{1.82}{\to} B r O_{3}^{-} \overset{1.5 V}{\to} H B r O \overset{1.595}{\to} B r_{2} \overset{1.0652 V}{\to} B r^{-}$
Then the species undergoing disproportionation is

$B r O_{3}^{-}$

$B r O_{4}^{-}$

HBrO

Br₂

Solution

HBrO

Calculate $E_{c e l l}^{°}$ corresponding to each compound undergoing disproportionation reaction. The reaction for which $E_{c e l l}^{°}$ comes out +ve is spontaneous.

$H B r O \overset{}{\to} B r_{2} E^{o} = 1.595 V, S R P (c a t h o d e) H B r O \overset{}{\to} B r O_{3}^{-} E^{o} = - 1.5 V, S O P (a n o d e) 2 H B r O \overset{}{\to} B r_{2} + B r O_{3}^{-} E_{c e l l}^{o} = S R P (c a t h o d e) - S R P (a n o d e) = 1.595 - 1.5 = 0.095 V E_{c e l l}^{0} > 0 \Rightarrow ∆ G^{o} < 0 [s p o n \tan e o u s]$

Some More Questions From Thermodynamics Chapter

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Thermodynamics

Some More Questions From Thermodynamics Chapter

Classify the following into different types of systems:
(i) Tea placed in a cup
(ii) Tea placed in a tea-pot
(iii) Tea placed in a thermosflask.

Define a closed system.

Define an isolated system.

Define intensive properties.

Define extensive properties.

Why all living systems need to be 'open systems'?

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

What is a state function?

A thermodynamic state function is a quantity

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NCERT Sample Papers

Entrance Exams Preparation

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For Daily Free Study Material Join wiredfaculty

Thermodynamics

Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below :BrO4- →1.82BrO3-→1.5 VHBrO→1.595Br2→1.0652 VBr-Then the species undergoing disproportionation is BrO3- BrO4- HBrO Br2

Some More Questions From Thermodynamics Chapter

Classify the following into different types of systems:(i) Tea placed in a cup(ii) Tea placed in a tea-pot(iii) Tea placed in a thermosflask.

Define a closed system.

Define an isolated system.

Define intensive properties.

Define extensive properties.

Why all living systems need to be 'open systems'?

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

What is a state function?

A thermodynamic state function is a quantity

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Classify the following into different types of systems:
(i) Tea placed in a cup
(ii) Tea placed in a tea-pot
(iii) Tea placed in a thermosflask.