Homework Help
Homework Help
View Details
Assignment Help
Assignment Help
View Details
Online Tutoring
Online Tutoring
View Details
Home » Chemistry Homework Help » Organic Chemistsry » Rate Equation Value
Rate Equation Value
Various methods are employed to calculate the rate constant. The method to be adopted and the proper selection depend on the experimental condition and nature of reactants and products. Some methods employed are discussed below:

Volumetric method

Used for reactions where reactants or products are acid or base or species undergoes a redox reaction. The idea is illustrated by the example below:

(i) Decomposition of H2O2
                                                      
H2O2 H2O + ½ O2

If [A0] = initial conc. At t = 0 and [A] is conc. At time t then the conc. Of H2O2 at different intervals can be calculated by titration of the reactant using KMnO4 in acidic medium. At any time volume of KMnO4[H2O2]4 at time t.

Thus, V0 = volume of KMnO4 at start = [A0]

Vt = volume of KMnO4 at time t = [A]

Hence for first order reaction, k = 2.303/t log V0/Vt.

(ii) Decomposition of nitrogen pentaoxide

N2O5 decomposes in the gaseous state as well as in the form of its solution in an inert solvent. The decomposition is shown below.



When the reaction is dome in its solution, N2O4 and NO2 remain in solution and the volume of oxygen gas collected is noted at different intervals of time. Thus,

Volume of O2 gas collected at any time (Vt) ∝ Amt. of N2O5 decomposed (x)
                                                              
i.e. x ∝ Vt

Also vol. of O2 gas collected at infinite time (V∞) Amt. of N2O5 taken initially (a)
                                                               
i.e. a ∝ V∞

Using the first order equation
                                            
k = 2.303/t log V∞/(V∞ - Vt)

Services:- Rate Equation Value Homework | Rate Equation Value Homework Help | Rate Equation Value Homework Help Services | Live Rate Equation Value Homework Help | Rate Equation Value Homework Tutors | Online Rate Equation Value Homework Help | Rate Equation Value Tutors | Online Rate Equation Value Tutors | Rate Equation Value Homework Services | Rate Equation Value
Submit Your Query ???
Topics
Activation Energy Average Rate Determination Rate Equation Value Reactions Collision Theory Reactions Temperature Effect Half Life Of Reaction Integrated Rate Equation Rate Equation Expression Reaction Mechanism Pseudo First Order Reaction Rate Equation Law Chemical Reaction Rate Additional Compounds Co-ordination Compounds Coordination Compounds Bonding Coordination Compounds Colors Octahedral Complex Splitting Tetrahedral Complex Splitting Stabilization Energy Crystal Field Theory Stability Affecting Factors Isomerism In Compounds Magnetic Properties Metal Carbonyls D-orbitals Orientation Mononuclear Compounds Naming Coordination Compounds Stability Terminology Compounds Werner Theory First Row Transition Elements Elements Electric Configuration F-block Elements Halides And Sulphides Metals-Oxides, Oxoanions Potassium Dichromate Potassium Permanganate The Actinoids The Lanthanoids Cell Potential Concentration Cells Electrolytic Solution Conductance Corrosion Gibbs Energy Electrochemical Series Rusting Electrochemical Theory Electrode Potential Electrolytic Cells Fuel Cells Galvanic Cells Electrode Potential Measurement Nerst Equation Corrosion Prevention Primary Cells Redox Reactions Salt Bridge Secondary Cells Standard Hydrogen Electrode Electrodes Types Steel Production Process Metals Extraction Metallurgy Principles Conduction In Insulators Conduction In Metals Density Of Unit Cell Solids-Electrical Properties Solids-Magnetic Properties Non Stoichiometric Defects Stoichiometric Defects Azeotropes Solutions-Colligative Properties Degree Of Association Degree Of Dissociation Depression In Freezing Point Elevation In Boiling Point Henry Law Constant Ideal Solutions Isotonic, Hypotonic Solutions Osmotic Pressure-Molar Mass Non Ideal Solutions Osmosis Solid In Liquid Solution Vapour Pressure Lowering Solubility Of Gases Solids In Liquids Solubility Types Of Solutions Liquid Solutions Pressure Adsorption Adsorption-Gases On Solids Adsorption From Solution Adsorption Applications Catalysis Chemical Adsorption Colloidal Solutions Coagulation Colloidal State Adsorption, Absorption Difference Emulsions Enzyme Catalysis Gels Heterogeneous Catalysis Homogeneous Catalysis Physical Adsorption Colloidal Solution Purification Group 15 Elements Group 16 Elements Dioxygen Chemical Reactions Dinitrogen Dioxygen The Oxygen Family Halides And Oxides Hydrogen Chloride Interhalogen Compounds Halogens Oxoacids Phosphorus Trichloride Nitric Acid Properties The Noble Gases Alcohols And Phenols C-O Bond Cleavage Phenol Preparation Ethers Alcohols General Preparation Alcohols Industrial Preparation Nomenclature Alcohols Physical Properties Phenols Preparation Phenolic Group Reactions Alkyl Group Reactions Some Commercial Alcohols Chemicals In Food Cleansing Action Of Soaps Drug Target Interaction Drugs And Medicines Non-Soapy Detergents Soaps Types Of Drugs Haloalkanes Chemical Properties Halides, Aryl Halides Haloalkanes And Halorenes Nucleophilic Substitution Halides Nomenclature Haloalkanes Physical Properties Haloarenes Physical Properties Polyhalogen Compounds Haloalkanes From Alcohols Haloalkanes From Hydrocarbons Cannizzaro Reaction Carboxylic Acid Preparation Of Acids Oxidation In Aldehydes Aldehydes, Ketones Properties Carboxylic Acid Properties Aldehydes, Ketones Preparation -COOH Group Reactions -OH Group Replacement Aldehydes, Ketones Reduction Carbonyl Oxygen Atom Commercial Carbonyl Compounds Commercial Carboxylic Acids Amines Amines Character Amines Chemical Properties Cyanides, Isocyanides Diazonium Salts Amines Types Aliphatic Amines Nomenclature Ortho Effect Amines Physical Properties Preparation Of Amines Diazonium Salts Properties Amines With Nitrous Acid Amines With Aldehydes Amines-Structure Basicity Biodegradable Polymers Polymerization Mode Polymers-Molecular Forces Polymers-Molecular Mass Natural, Synthetic Polymers Natural Rubber Polymers Condensation Polymers Polydienes Preparation Polyhallolefins Preparation Structure Based Polymers Synthetic Rubber