Chemistry Archives

Posted inin Chemistry

Does the Pre-exponential Factor A Depend on Mechanism in Chemical Reactions?

Posted byby Franklin Veaux
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3 min

Does the Pre-exponential Factor A Depend on Mechanism? The pre-exponential factor (A) in the Arrhenius equation does depend on the reaction mechanism. Catalysts influence A by changing the transition state...

Posted inin Chemistry

Is Rust Dust Dangerous to Breathe? Key Facts and Health Impacts

Posted byby Franklin Veaux
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7 min

Is Rust Dust Bad to Breathe In? Yes, rust dust is bad to breathe in. Rust dust mainly consists of iron oxide but often carries other materials, including coatings from...

Posted inin Chemistry

Automatic Calculators for Molecular Orbitals: Tools, Methods, and Challenges

Posted byby Franklin Veaux
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7 min

Is There an Automatic “Calculator” for Molecular Orbitals? Yes, several software tools can automatically calculate and visualize molecular orbitals and their diagrams, but no simple single-click calculator instantly produces full,...

Posted inin Chemistry

Acid-Base Equilibria: Key Points, Challenges, Teaching Methods, and Concept Connections

Posted byby Franklin Veaux
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2 min

Understanding Acid-Base Equilibria Acid-base equilibria describe the balance between acids and bases in solution, dictating the pH and chemical behavior of the system. It is a central topic in general...

Posted inin Chemistry

Polyethylene Glycol vs Propylene Glycol: Key Differences, Uses, and Safety Explained

Posted byby Franklin Veaux
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4 min

Understanding Polyethylene Glycol vs Propylene Glycol Polyethylene Glycol (PEG) and Propylene Glycol (PG) are distinct chemicals with different structures, uses, and safety profiles, though both are widely present in consumer...

Posted inin Chemistry

Help Understand Hartree Energy: Definition, Significance, and Implications for Electrons

Posted byby Franklin Veaux
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2 min

Understanding Hartree Energy Hartree energy is a unit of energy often used in atomic and molecular physics, defined as twice the ionization energy of a hydrogen atom. This means it...

Posted inin Chemistry

Best and Safest Electrolytes for Water Electrolysis: A Comprehensive Guide

Posted byby Franklin Veaux
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5 min

Best and Safest Electrolyte for Electrolysis of Water The best and safest electrolyte for water electrolysis is baking soda (sodium bicarbonate) due to its availability, safety, and effectiveness. It offers...

Posted inin Chemistry

Understanding the Changes in Flame Color: Causes and Effects Explained

Posted byby Franklin Veaux
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7 min

Can Someone Explain Why the Flame’s Color Changes? The color of a flame changes primarily due to variations in combustion completeness, temperature, chemical composition, and environmental conditions such as gravity....

Posted inin Chemistry

Make Your Own Ammonia-Based Smelling Salts: A Step-by-Step Guide

Posted byby Franklin Veaux
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4 min

How to Make Your Own Ammonia-Based Smelling Salts Ammonia-based smelling salts primarily consist of a mixture of sodium carbonate (Na2CO3) and ammonium chloride (NH4Cl). These two compounds react together when...

Posted inin Chemistry

Understanding Valence and Valency: Key Concepts and Differences Explained

Posted byby Franklin Veaux
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5 min

Understanding Valence and Valency Valence or valency refers to the number of chemical bonds an atom can form based on its outermost electrons, called valence electrons. These electrons determine an...