Ncert solutions for class 11 chemistry chapter 8

What is meant by electrochemical series? Then, adding equation 1 and 2 , we get the balanced redox reaction as given below: Arrange the given metals in the order in which they displace each other from the solution of their salts.

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In principle, S can have a minimum O. Classification of Elements and Periodicity in Properties.

Question 25 Solution After adding both the half reactions, we get the balanced reaction as given below: What is the maximum weight of nitric oxide that can be obtained starting only with Which of the following halogens do not exhibit a positive oxidation number in their compounds? Multiply the oxidation half reaction with 5 and the reduction half reaction with 2, then add them.

NCERT Solutions for Chemistry CBSE Class 11 science, Chapter 8 Redox Reactions - TopperLearning

Justify that the following reactions are redox reactions: One of the reacting elements always has an element that can exist in at least 3 oxidation numbers. From the above discussion, it follows that during electrolysis of an aqueous solution of H 2 S0 4 only the electrolysis of H 2 O occurs liberating H 2 at the cathode and O 2 at chemistr anode.

When excess of Na is used, sodium oxide is formed in which the oxidation state of O is Therefore, we will have to consider the structure of KI 3 to find the oxidation states.

Thus, the order in which the given metals displace each other from the solution of their salts is as given below: Hence, the average oxidation number of I is.

Next Story Delhi Public School: Hydrogen electrode can be made.

NCERT Solutions for Class 11 Chemistry Chapter 8 Redox Reactions

A redox couple consists of oxidised and reduced form of the same substance taking part in the oxidation or reduction half reaction. Standard hydrogen electrode is used as reference electrode. By continuing to use our website, you agree to our Privacy Policy and Cookie Policy.

It can only decrease its O. Halogens have a strong tendency to accept electrons.

It is said that chlorine is harmful in excess. Obtain a balanced equation for this redox reaction: Thus, the reducing character of hydrohalic acids decreases in the order: Hence, the oxidation no.

H 2 S0 4 is added to an inorganic mixture containing cor, a pungent smelling gas HCl is produced because a stronger acid displaces a weaker acid from its salt. Therefore, O 3 acts only as an oxidant. This website uses cookie or similar technologies, to enhance your browsing experience and provide personalised recommendations.

Which of the following is most powerful oxidizing agent in the following. Here, one of the three Fe atoms exhibits the O. Hence, in a KI 3 molecule, the O. Why does the following reaction occur? In a disproportionation reaction an element in one oxidation state is simultaneously oxidised and reduced.

NCERT Solutions For Class 11 Chemistry Chapter 8

Hence, they cannot have the same oxidation number. Among halogens, fluorine is the best oxidant and among hydrohalic compounds, hydroiodic acid is the best reductant.

Among the following molecules, in which does bromine show the maximum oxidation number?

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