What sorts of informations can you draw | Class 11 Chemistry Chapter Redox Reactions, Redox Reactions NCERT Solutions

Question:

What sorts of informations can you draw from the following reaction ?

(CN)2(g)  +  2OH-(aq)  →  CN-(aq) + CNO-(aq) + H2O(l)

Answer:

The oxidation numbers of carbon in (CN)2, CN- and CNO- are +3, +2 and +4 respectively.

These are obtained as shown below:

Let the oxidation number of C be x.

(CN)2

2(x - 3) = 0

∴x = 3

CN-

x - 3 = -1

∴x = 2

CNO-

x -3 - 2 =-1

∴x = 4

The oxidation number of carbon in the various species is:

(C+3N)2(g)  +  2OH-(aq)  →  C+2N-(aq) + C+4NO-(aq) + H2O(l)

It can be easily observed that the same compound is being reduced and oxidised simultaneously in the given equation. Reactions in which the same compound is reduced and oxidised is known as disproportionation reactions. Thus, it can be said that the alkaline decomposition of cyanogen is an example of disproportionation reaction.


Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Redox Reactions.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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Welcome to the NCERT Solutions for Class 11 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 20: What sorts of informations can you draw from the following reaction ? (CN)2(g)  +  2OH-....