Laws of Chemical Combination Formula
The Laws of Chemical Combination are fundamental principles that describe how substances react and combine in chemical reactions. They include the Law of Conservation of Mass, and the Law of Definite Proportions.
Sawat Sayyed19 Sept, 2023
Share
Chemistry is the study of matter's transformation from one form to another. These transformations often occur due to combining two different types of matter. Known as laws of chemical combination , these rules govern the combination of different elements. Specific basic rules govern the combination of different elements to form compounds.
Basic Laws of Chemical Combinations
Five basic laws of chemical combination govern the chemical combinations of elements.- Law of Conservation of Mass
- Law of Definite Proportions
| - | % of copper | % of oxygen | % of carbon |
| Natural sample | 51.35 | 9.74 | 38.91 |
| Synthetic sample | 51.35 | 9.74 | 38.91 |
- Law of Multiple proportions
Also Check - Nucleophile formula
Example: Hydrogen + oxygen = water 2g + 16g = 18 g Hydrogen + oxygen = hydrogen peroxide 2g + 32g = 34g Here the masses of oxygen which combines with the same mass of hydrogen makes a ratio of 1:2Also Check - Rutherford’s Atomic Model Formula
Despite its limitations, this law is best suited to simple compounds only. For example, if we take a hydrocarbon like decane(C10H22), 10 grams of C will react with 18.6 grams of H, with a ratio of hydrogen masses of about 121:120, making a hard ratio. Polymers and oligomers do not work with this method either.- Gay Lussac’s Law of Gaseous Volumes
Also Check - Tyndall Effect Formula
The mathematical formula of the law is as follows: P ∝ T; P/T = k, Where P stands for the pressure exerted by the gas T that the temperature of the gas k is a constant- Avogadro’s Law
Laws of Chemical Combination Formula FAQs
What are the Laws of Chemical Combination?
The Laws of Chemical Combination are fundamental principles that describe how substances combine and react with each other in chemical reactions. There are three main laws: the Law of Conservation of Mass, the Law of Definite Proportions, and the Law of Multiple Proportions.
What is the Law of Conservation of Mass?
The Law of Conservation of Mass states that in a chemical reaction, the total mass of the reactants is equal to the total mass of the products. This means that atoms are neither created nor destroyed during a chemical reaction; they are rearranged to form new substances.
What is the Law of Definite Proportions?
The Law of Definite Proportions asserts that a chemical compound always contains the same elements in the same proportions by mass, regardless of the source or method of preparation. This law helps define the unique composition of chemical compounds.
What is the Law of Multiple Proportions?
The Law of Multiple Proportions states that when two elements combine to form different compounds, the ratios of the masses of one element that combine with a fixed mass of the other element can be expressed as small whole numbers. This law is particularly relevant when elements can form multiple compounds with each other.
Why are the Laws of Chemical Combination important?
These laws are crucial in understanding and predicting chemical reactions. They provide a solid foundation for stoichiometry, allowing scientists and chemists to precisely calculate the quantities of substances involved in chemical reactions and design experiments.
Talk to a counsellorHave doubts? Our support team will be happy to assist you!
Check out these Related Articles
Join 15 Million students on the app today!
Live & recorded classes available at easeDashboard for progress trackingMillions of practice questions at your fingertips
Free Learning Resources
PW Books
Notes (Class 10-12)
PW Study Materials
Notes (Class 6-9)
Ncert Solutions
Govt Exams
Class 6th to 12th Online Courses
Govt Job Exams Courses
UPSC Coaching
Defence Exam Coaching
Gate Exam Coaching
Other Exams
Know about Physics Wallah
Physics Wallah is an Indian edtech platform that provides accessible & comprehensive learning experiences to students from Class 6th to postgraduate level. We also provide extensive NCERT solutions, sample paper, NEET, JEE Mains, BITSAT previous year papers & more such resources to students. Physics Wallah also caters to over 3.5 million registered students and over 78 lakh+ Youtube subscribers with 4.8 rating on its app.
We Stand Out because
We provide students with intensive courses with India’s qualified & experienced faculties & mentors. PW strives to make the learning experience comprehensive and accessible for students of all sections of society. We believe in empowering every single student who couldn't dream of a good career in engineering and medical field earlier.
Our Key Focus Areas
Physics Wallah's main focus is to make the learning experience as economical as possible for all students. With our affordable courses like Lakshya, Udaan and Arjuna and many others, we have been able to provide a platform for lakhs of aspirants. From providing Chemistry, Maths, Physics formula to giving e-books of eminent authors like RD Sharma, RS Aggarwal and Lakhmir Singh, PW focuses on every single student's need for preparation.
What Makes Us Different
Physics Wallah strives to develop a comprehensive pedagogical structure for students, where they get a state-of-the-art learning experience with study material and resources. Apart from catering students preparing for JEE Mains and NEET, PW also provides study material for each state board like Uttar Pradesh, Bihar, and others
Copyright © 2025 Physicswallah Limited All rights reserved.