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Chapter 14 – Chemical Effects of Electric Current

The following Topics and Sub-Topics are covered in this chapter and are available on MSVgo:

Introduction

Electric current plays an important role in today’s life. You can’t imagine our life without electricity or electric current, can you? Luigi Galvani accidentally discovered electric current. He observed that electric current flows across two different or dissimilar metals. Some examples of electric current include: Change in the color of solution, deposition of metal that can be seen on electrodes. The passage or path of an electric current through a conducting liquid is one of the chemical effects of electric current.

To learn these concepts in an easy and more efficient way we are providing a wide range of materials, formulas and videos for better understanding of the topic. The MSVgo philosophy is to enable core understanding of any concept. So never mention ‘learning by heart’ or ‘memorising’ or give similar cues. We can say ‘formulae are critical’ and ‘check out videos on MSVgo to understand the concept behind them’. For example, when we pass electric current through water, it ionizes into H+ and OH-ions, the positive ion moves towards cathode to gain electrons and negative ion will move towards anode to lose an electron.

Electroplating is the process of deposition of one layer of metal over the other by the process of electrolysis. Electroplating is used in plating gold over expensive jewellery and watches, Zinc is coated over steel through this method to prevent corrosion. This process is similar to the electroforming process. In the electroplating process, both cathode and anode are immersed in a conducting liquid bath that consists of a solution of salts that needs to be plated. A direct current is passed through the solution due to which the metal ion started to transfer onto the metal that needs to be plated.

Electroplating of silver spoon into gold is mentioned below: –

  • To conduct this experiment, take an acidified solution of the metal that is supposed to be coated as electrolyte the object that needs to be electroplated (in this case spoon) is taken as cathode.
  • Take a plate of metal that needs to be deposited as an anode.
  • Make sure that the silver spoon is cleaned with a dilute acid solution to remove the presence of oxide layer from the surface and washed in the water until no more acid is left.
  • The spoon is cleaned properly with acidified gold chloride solution that has to be kept in a beaker.
  • A plate of gold that will be served as anode is suspended in the chloride gild solution.
  • Complete the circuit with key and a battery.
  • After the completion of the process, the silver spoon will turn into a gold plated spoon.

Do liquids conduct electricity? Let us find the answer in here. Different or dissimilar solutions of liquids conduct electricity differently. Take an example of tap water and salt water. You can observe that salt water conducts electricity, it is because the dissolved material in the water helps it to conduct electricity. Resulting in flow of current in the case of salt water. Some became good conductors of electricity like copper and aluminum while others became insulators like wood and paper due to the presence of electrons in it. The presence of electrons in an object or metal or solution decides its conducting properties. Thus to know the property of any metal it is important to know the interaction of ions inside it.

Application of Chemical effect of electric current

Some of the applications of chemical effects of electric current are listed below: –

  • Extraction of metals from the ores.
  • To purify metals.
  • Production of compounds like sodium hypochlorite.
  • It reduces friction.
  • It helps in improving electrical conductivity.
  • It helps in protecting the object surface from abrasion.
  •  It helps to increase water resistance,
  • Decomposition of compounds like water into its constituents like hydrogen and oxygen.

1. What are the three chemical effects of electric current?

Three effects of chemical effects of electric current are bubbles of the gases are formed over respective electrodes, deposition of one metal over another, change of color of the solution.

2. What chemical effects of electric current give some examples?

Examples of its chemical effect of electric current are gold and chromium plating over metals to prevent the action of corrosion, to electroplate car parts to prevent them from damaging, purification of gold and copper.

3. Who discovered the chemical effect of electric current?

Luigi Galvani accidentally discovered the chemical effect of electric current.

4. What are the applications of chemical effects of current?

Chemical effects of current are used in electroplating process (extraction of metal, coating one metal over another, decomposition of compounds)

5. What are the four effects of electricity?

The four effects of electricity are heating effect, chemical effect, magnetic effect and electric shocks.

6. How current is measured?

The current is measured in an Ampere. It expresses the quantity of electrical charge or electrons flowing over that particular period of time. The current can be measured using a device called ammeter.

The electric current flows through a conducting medium which results in the formation of chemical reaction.  Chemical effects of electric current are bubbles of the gases that are formed over respective electrodes, deposition of one metal over another, change of color of the solution. Examples of chemical effects of electric current are gold and chromium plating over metals to prevent the action of corrosion, to electroplate car parts to prevent them from damaging, purification of gold and copper.

One of the main applications of this is electroplating. The examples of electroplating can be easily seen in decomposition or plating of any metal. Everywhere we go we can find electric current and its effects around us. 

High School Physics

  • Alternating Current
  • Atoms
  • Communication Systems
  • Current Electricity
  • Dual nature of Radiation and Matter
  • Electric Charges and Fields
  • Electricity
  • Electromagnetic Induction
  • Electromagnetic Waves
  • Electron Beams and Radioactivity
  • Electrons and Photons
  • Electrostatic Potential and Capacitance
  • Fluid Pressure
  • Force and Acceleration
  • Force And Laws Of Motion
  • Gravitation
  • Internal Energy
  • Kinetic Theory
  • Law of motion
  • Light – Reflection And Refraction
  • Magnetic Effects Of Electric Current
  • Magnetism and Matter
  • Management Of Natural Resources
  • Mechanical properties of Fluids
  • Mechanical properties of Solids
  • Motion
  • Motion in a plane
  • Motion in a straight line
  • Moving Charges and Magnetism
  • Nuclear Energy
  • Nuclei
  • Oscillations
  • Our Environment
  • Paths of Heat
  • Physical world
  • Ray optics and optical instruments
  • Semiconductor Devices
  • Semiconductor Electronics: Materials, Devices and Simple Circuits
  • Simple Machines
  • Sound
  • Sources Of Energy
  • Specific and Latent Heats
  • Spherical Mirrors
  • Static Electricity
  • Systems of Particles and Rotational motion
  • Thermal properties of matter
  • Thermodynamics
  • Units and Measurement
  • Vectors, Scalar Quantities and Elementary Calculus
  • Wave Optics
  • Waves
  • Work, Power and Energy

High School Chemistry

  • Acids, Bases and Salts
  • Alcohols, Phenols and Ethers
  • Aldehydes, Ketones and Carboxylic Acids
  • Aliphatic and Aromatic Hydrocarbons
  • Alkyl and Aryl Halides
  • Amines
  • Analytical Chemistry 
  • Atomic Structure
  • Atoms And Molecules
  • Basic concepts of Chemistry
  • Biomolecules
  • Carbon And Its Compounds
  • Carboxylic acids and Acid Derivatives
  • Chemical Bonding and Molecular Structures
  • Chemical Energetics
  • Chemical Equilibria
  • Chemical Kinetics
  • Chemical Reactions And Equations
  • Chemical Reactions and Their Mechanisms
  • Chemistry in Everyday Life
  • Chemistry of p-Block elements
  • Chemistry of Transition and Inner Transition
  • Classification of Elements
  • Coordination Compounds
  • Cyanide, Isocyanide, Nitro compounds and Amines
  • Electrochemistry
  • Electrolysis
  • Elements, Compounds and Mixtures
  • Environmental Chemistry
  • Equilibrium
  • Ethers and Carbonyl compounds
  • Haloalkanes and Haloarenes
  • Hydrocarbons
  • Hydrogen
  • Ideal solutions
  • Introduction to Organic Chemistry
  • Ionic equilibria
  • Matter
  • Matter Around Us
  • Matter In Our Surroundings
  • Metallurgy
  • Metals And Non-Metals
  • Mole Concept and Stoichiometry
  • Natural Resources
  • Organic Chemistry – Basic Principles
  • Periodic Classification of Elements
  • Physical and Chemical Changes
  • Physical and Chemical Properties of Water
  • Polymers
  • Preparation, Properties and Uses of Compounds
  • Principles and Processes of Isolation of Elements
  • Redox Reactions
  • Relative Molecular Mass and Mole
  • States of Matter
  • Structure Of The Atom
  • Study of Compounds
  • Study of Gas Laws
  • Study of Representative Elements
  • Surface Chemistry
  • The d-block and f-block elements
  • The Gaseous State
  • The p-Block Elements
  • The Periodic Table
  • The s-Block Elements
  • The Solid State
  • Thermodynamics

High School Biology

  • Absorption and Movement of Water in Plants
  • Adolescent Issues
  • Anatomy of Flowering Plants
  • Animal Kingdom
  • Bacteria and Fungi-Friends and Foe
  • Biodiversity and Conservation
  • Biofertilizers
  • Biological Classification
  • Biomedical Engineering
  • Biomolecules
  • Biotechnology and its Applications
  • Biotic Community
  • Body Fluids and Circulation
  • Breathing and Exchange of Gases
  • Cell – Unit of Life
  • Cell Cycle and Cell Division
  • Cell Division and Structure of Chromosomes
  • Cell Reproduction
  • Cellular Respiration
  • Chemical Coordination and Integration
  • Circulation
  • Control And Coordination
  • Crop Improvement
  • Digestion and Absorption
  • Diversity In Living Organisms
  • Ecosystem
  • Environmental Issues
  • Excretory Products and their Elimination
  • Flowering Plants
  • Genes and Chromosomes
  • Health and Diseases
  • Health and Its Significance
  • Heredity And Evolution
  • Heredity and Variation
  • How Do Organisms Reproduce?
  • Human Diseases
  • Human Eye And Colourful World
  • Human Health and Disease
  • Human Population
  • Human Reproduction
  • Hygiene
  • Improvement In Food Resources
  • Integumentary System- Skin
  • Kingdom Fungi
  • Kingdom Monera
  • Kingdom Protista
  • Life Processes
  • Locomotion and Movement
  • Microbes in Human Welfare
  • Mineral Nutrition
  • Molecular Basis of Inheritance
  • Morphology of Flowering Plants
  • Neural Control And Coordination
  • Nutrition in Human Beings
  • Organism and Population
  • Photosynthesis
  • Photosynthesis in Higher Plants
  • Plant Growth and Development
  • Plant Kingdom
  • Pollination and Fertilization
  • Pollution; Sources and its effects
  • Principles of Inheritance and Variation
  • Reproduction and Development in Angiosperms
  • Reproduction in Organisms
  • Reproductive Health
  • Respiration in Human Beings
  • Respiration in Plants
  • Respiratory System
  • Sexual Reproduction in Flowering Plants
  • Strategies for Enhancement in Food Production
  • Structural Organisation in Animals
  • Structural Organisation of the Cell
  • The Endocrine System
  • The Fundamental Unit Of Life
  • The Living World
  • The Nervous System and Sense Organs
  • Tissues
  • Transpiration
  • Transport in Plants

High School Math

  • Algebra – Arithmatic Progressions
  • Algebra – Complex Numbers and Quadratic Equations
  • Algebra – Linear Inequalities
  • Algebra – Pair of Linear Equations in Two Variables
  • Algebra – Polynomials
  • Algebra – Principle of Mathematical Induction
  • Algebra – Quadratic Equations
  • Binomial Theorem
  • Calculus – Applications of Derivatives
  • Calculus – Applications of the Integrals
  • Calculus – Continuity and Differentiability
  • Calculus – Differential Equations
  • Calculus – Integrals
  • Geometry – Area
  • Geometry – Circles
  • Geometry – Conic Sections
  • Geometry – Constructions
  • Geometry – Introduction to Euclid’s Geometry
  • Geometry – Three-dimensional Geometry
  • Geometry – Lines and Angles
  • Geometry – Quadrilaterals
  • Geometry – Straight Lines
  • Geometry – Triangles
  • Linear Programming
  • Matrices and Determinants
  • Mensuration – Areas
  • Mensuration – Surface Areas and Volumes
  • Number Systems
  • Number Systems – Real Numbers
  • Permutations and Combinations
  • Probability
  • Sequence and Series
  • Sets and Functions
  • Statistics 
  • Trignometry – Height and Distance
  • Trignometry – Identities
  • Trignometry – Introduction

Middle School Science

  • Acids, Bases And Salts
  • Air and Its Constituents
  • Basic Biology
  • Body Movements
  • Carbon and Its Compounds
  • Cell – Structure And Functions
  • Changes Around Us
  • Chemical Effects Of Electric Current
  • Chemistry in Your Life
  • Coal And Petroleum
  • Combustion And Flame
  • Components Of Food
  • Conservation Of Plants And Animals
  • Crop Production And Management
  • Electric Current And Its Effects
  • Electricity And Circuits
  • Elements and Compounds
  • Fibre To Fabric
  • Food production and management
  • Force And Pressure
  • Forests: Our Lifeline
  • Friction
  • Fun With Magnets
  • Garbage In, Garbage Out
  • Getting To Know Plants
  • Health and Hygiene
  • Heat
  • Hydrogen
  • Life Processes: Nutrition in Animals and Plants
  • Light, Shadows And Reflections
  • Materials: Metals And Non-Metals
  • Matter and Its States
  • Metals and Non-metals
  • Micro Organisms: Friend And Foe
  • Motion And Measurement Of Distances
  • Motion And Time
  • Nutrition In Animals
  • Nutrition In Plants
  • Organization in Living Things
  • Our Environment
  • Physical And Chemical Changes
  • Pollution and conservation
  • Pollution Of Air And Water
  • Reaching The Age Of Adolescence
  • Reproduction In Animals
  • Reproduction In Plants
  • Respiration In Organisms
  • Rocks and Minerals
  • Separation Of Substances
  • Simple Machines
  • Soil
  • Some Natural Phenomena
  • Sorting Materials Into Groups
  • Sound
  • Stars And The Solar System
  • Structure of Atom
  • Synthetic Fibers And Plastics
  • The Living Organisms And Their Surroundings
  • Transfer of Heat
  • Transformation of Substances
  • Transportation In Animals And Plants
  • Universe
  • Waste-water Story
  • Water: A Precious Resource
  • Weather, Climate And Adaptations Of Animals To Climate
  • Winds, Storms And Cyclones

Middle School Math

  • Addition
  • Area and Its Boundary
  • Boxes and Sketches
  • Data Handling
  • Fun With Numbers
  • Heavy and Light
  • How Many
  • Long And Short
  • Mapping
  • Measurement
  • Money
  • Multiplication and Factors
  • Multiply and Divide
  • Numbers
  • Parts and Wholes
  • Pattern Recognition
  • Patterns
  • Play With Patterns
  • Rupees And Paise
  • Shapes And Angles
  • Shapes And Designs
  • Shapes and Space
  • Similarity
  • Smart Charts
  • Squares
  • Subtraction
  • Tables And Shares
  • Tenths and Hundredths
  • Time
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