Redox reaction class 11

Oxidation–reduction or redox reactions are reactions that involve the transfer of electrons between chemical species (check out and charge, which can make them challenging to balance by inspection alone. In this article, we’ll learn about the half-reaction method of balancing, a helpful procedure for balancing the equations of redox reactions occurring in aqueous solution. To balance a redox equation using the half-reaction method, the equation is first divided into two half-reactions, one representing oxidation and one representing reduction. The equations for the half-reactions are then balanced for mass and charge and, if necessary, adjusted so that the number of electrons transferred in each equation is the same. Finally, the half-reaction equations are added together, giving the balanced overall equation for the reaction. Is this equation balanced? It appears to be balanced with respect to mass since there is one C o \ce N i N, i atom on each side of the equation. However, it is not balanced for charge: the net charge on the left side of the equation is 3 + 3+ 3 + 3, plus , while the net charge on the right side is 4 + 4+ 4 + 4, plus . To help us balance the equation for charge, we’ll use the half-reaction method. Reduction half-reaction: The reduction half-reaction shows the reactants and products participating in the reduction step. In this case, our equation should show C o X 3 + \ce C o X 2 + . It should also include an electron on the left side of the equation fo...

NCERT Solutions Class 11 Chemistry Chapter 11 - Redox Reactions are available in Vedantu. Students must understand that the entire field of electrochemistry deals with redox reactions. From these solutions our experts have explained a lot of concepts. These questions are designed as per the latest Syllabus of NCERT Curriculum. We have also given some important questions that will definitely help students to score good marks in final exams. All the solutions are explained in a detailed manner along with the chemical reactions and formulas. Topics Covered in Class 11 Chemistry Chapter 8 - Redox Reactions are as follows: The main topics covered in • Classical Idea of Redox Reactions – Oxidation And Reduction Reactions • Redox Reactions In Terms of Electron Transfer Reactions • Competitive Electron Transfer Reactions • Oxidation Number • Types of Redox Reactions • Balancing of Redox Reactions • Redox Reactions as The Basis For Titrations • Limitations of Concept of Oxidation Number • Redox Reactions And Electrode Processes Important Points Let us look at some of the important points of Redox reactions. • Oxidation and reduction events occur simultaneously during a redox reaction. Combination reactions, decomposition reactions, displacement reactions, and disproportionation reactions are the four types of redox reactions. • A combination reaction occurs when two or more reactants or compounds are mixed together to generate a single product. Consider the following scenario: Calc...

Redox is a type of chemical reaction in which the oxidation states of substrate change. Oxidation is the loss of electrons or an increase in the oxidation state of a chemical or atoms within it. Reduction is the gain of electrons or a decrease in the oxidation state of a chemical or atoms within it. The formation of hydrogen fluoride is an example of a redox reaction. 2HgCl₂(aq) + SnCl₂(aq) ⟶ Hg₂Cl₂(s) + SnCl₄(aq) Oxidation: The term oxidation is defined as the addition of oxygen/electronegative element to a substance or removal of hydrogen/ electropositive element from a substance. Reduction: The term reduction has been broadened these days to include removal of oxygen/electronegative element from a substance or addition of hydrogen/ electropositive element to a substance. Example: 2FeCl₃ (aq) + H₂ (g) ⟶ 2FeCl₂ (aq) + 2HCl(aq) (Removal of electronegative element, chlorine from ferric chloride) PbO and PbO₂ react with HCl according to following chemical equations: 2PbO + 4HCl → 2PbCl₂ + 2H₂O PbO₂ + 4HCl → PbCl₂ + Cl₂ + 2H₂O 2PbO + 4HCl → 2PbCl₂ + 2H₂O (Acid base reaction) PbO₂ + 4HCl → PbCl₂ + Cl₂ + 2H₂O (Redox reaction) (The oxidation number of lead in the oxides) PbO is a basic oxide and simple acid base reaction takes place between PbO and HNO₃. On the other hand, in PbO₂ lead is in + 4 oxidation state and cannot be oxidised further. Therefore, no reaction takes place. Thus, PbO₂ is passive, only PbO reacts wit...

NCERT Solutions Class 11 Chemistry Chapter 8 Redox Reactions is a great way to prepare for exams. Our NCERT Solution is precisely articulated by the experts on the subject matter. In this NCERT Solutions Class 11,we have concise every concept for efficient learning. We have an in-depth discussion of all important topics such as • Redox Reactions – Redox reaction is also called oxidation-reduction reaction, in this type of chemical reaction, there is a transfer of electrons between two species. A redox reaction is such chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. Redox reactions are common but very important for the basic functions of life, including photosynthesis, respiration, combustion, and corrosion or rusting. • Oxidation Reactions – the process of adding oxygen or any electronegative element or the removal of hydrogen or electropositive element is called an oxidation reaction. In the process of oxidation atoms and ions losses one or more electrons. • Reduction Reactions – the process which involves the addition of hydrogen or an electropositive element or the removal of oxygen or any electronegative element. In the process of oxidation atoms and ions gain one or more electrons. • Redox Reactions in terms of Electron Transfer Reactions – In the oxidation-reduction reaction chemical reaction involves a transfer of electrons between two kinds of species. • Oxidation Number – oxidation also called t...

Class 11 chemistry syllabus includes many exciting and knowledgeable chapters. These chapters not only improve the general knowledge of the student but also lays the foundation for higher studies. Especially the chapter on Redox Reactions familiarize us with the intricate phenomenon of formation of a unique type of reaction. Being a chemistry student, you must go through the blog to explore some quirky details about class 11 redox reactions along with simple and effective notes for learning it. Class 11 Environmental Chemistry What is Redox Reaction? When the oxidation states of atoms are changed, and electrons get transferred between the two participating reactants, then such a type of chemical reaction is called a redox reaction. It is a combination of two reactions, i.e. oxidation and reduction reaction which involves electron transfer. Under such a reaction, the oxidation state of the reacting chemical species gets changed, wherein one chemical species loses the electrons, and the other chemical species gains the electrons simultaneously. For Example: A reaction between hydrogen and fluorine to form hydrogen fluoride. During the reaction, hydrogen oxidizes and loses two electrons, wherein fluorine gains two electrons. Credit: Physics Wallah Class 11 Chemistry Chapter 8 Redox Reactions Important Topics Here are some of the important topics that you must study in this chapter: • Redox Reactions in Reference With Electron Transfer Reactions • Different Types of Redox Reac...

Class 11 Chemistry Chapter 8 Redox Reactions MCQs Class 11 chemistry MCQs with answers are provided here for chapter 8 Redox Reactions. These MCQs are based on the CBSE board curriculum and correspond to the most recent Class 11 chemistry syllabus. By practicing these Class 11 Multiple choice questions, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 11 Annual examinations as well as other entrance exams such as NEET and JEE. Download Chapter 8 Redox Reactions MCQs PDF by clicking on the button below. Class 11 Redox Reactions MCQs 1. Which of the following is not a redox reaction? (a) Burning of candle (b) Rusting of iron (c) Dissolving salt in water (d) Dissolving Zinc in dil. H 2SO 4 Ans: (c) Solution: Dissolving salt in water is not a redox reaction. 2. The oxidation number of Cr in Cr(CO) 6 is —————– (a) 0 (b) +2 (c) -2 (d) +6 Ans: (a) Solution: CO is a neutral ligand whose charge is zero. In Cr(CO)6 complex, oxidation number of Cr is zero. 3. Which of the following is not a redox reaction? (a) CaCO 3 → CaO + CO 2 (b) O 2 + 2H 2 → 2H 2O (c) Na + H 2O → NaOH + 1/2H 2 (d) MnCl 3 → MnCl 2 + 1/2 Cl 2 Ans: (a) Solution: CaCO 3 → CaO + CO 2 This is not a redox reaction because no element undergoes a change in oxidation number. 4. In the reaction 3Br 2 + 6CO 3 2- + 3H 2O → 5Br – + BrO 3 – + 6HCO 3 – (a) Bromine is oxidised and carbonate is reduced. (b) Bromine is reduced and water is oxidised. (c) Bromine...