Urea is one of the most important organic compounds in chemistry. It is widely used as an agricultural fertilizer and is a major component of human urine. Calculating its molecular weight is a standard exercise in basic stoichiometry.
Urea holds a highly special place in history. In 1828, chemist Friedrich Wöhler artificially synthesized urea in a lab. This proved that 'organic' chemicals found in living beings could be created from 'inorganic' minerals, changing the course of Chemistry forever!
To calculate the molecular weight, you must first know the chemical formula of Urea. Formula: CO(NH₂)₂ or NH₂CONH₂
This tells us that one molecule of Urea contains:
To find the total molecular weight (molar mass), we multiply the number of atoms by their respective standard atomic masses:
Now, add them up:
Total = 12.01 + 16.00 + 28.02 + 4.04 = 60.07
The molecular weight (molar mass) of Urea is approximately 60.06 g/mol (Often rounded simply to 60 g/mol in school exams for easier calculations).
Urea is used as a fertilizer because it has an incredibly high Nitrogen content (about 46% by weight). Nitrogen is essential for leafy green plant growth.
What is the Carbylamine Reaction? (Isocyanide Test)
Learn about the Carbylamine reaction in organic chemistry. Understand how this test is used to identify primary amines by producing foul-smelling isocyanides.
Cation and Anion — Definition, Examples and Difference
Cations are positively charged ions (lose electrons); anions are negatively charged ions (gain electrons). Definition, examples Na⁺, Cl⁻, and differences explained.
What is the Full Form of CBG?
Learn the full form of CBG. Discover what Compressed Bio Gas is, how it is produced from agricultural waste, and its benefits as a green automotive fuel.
Characteristics of Particles of Matter
What are the characteristics of particles of matter? Learn about empty spaces, continuous motion, and attraction between particles. CBSE Class 9 notes.
What are the Characteristics of the Particles of Matter?
Learn the 4 main characteristics of the particles of matter. Understand kinetic theory, intermolecular space, and forces of attraction.
Turn this guide into revision flashcards, a practice exam, or an AI-generated podcast — free, no signup required.