Table of Contents
- 1 What does equivalent mean in a chemical reaction?
- 2 What is mole equivalent in chemistry?
- 3 What must happen for a chemical reaction to occur?
- 4 How do you find equivalent reactions?
- 5 What 3 things happen in a chemical reaction?
- 6 What 2 things always happen in a chemical reaction?
- 7 What means equivalent fraction?
What does equivalent mean in a chemical reaction?
An equivalent (symbol: officially equiv; unofficially but often Eq) is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction. The mass of an equivalent is called its equivalent weight.
What is mole equivalent in chemistry?
It is a measure of a substance’s ability to combine with other substances. It is frequently used in the context of normality. The equivalent is formally defined as the amount of a substance (moles) which will react with 6.022 x 1023 electrons. (This is Avogadro’s Number, which is the number of particles in a mole).
What must happen for a chemical reaction to occur?
Conclusion. According to the collision theory, the following criteria must be met in order for a chemical reaction to occur: Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. Molecules must collide with the proper orientation.
How do you know if reactions will occur?
How can I tell if a chemical reaction is occurring? A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.
What is the meaning of equivalence relation?
Definition 1. An equivalence relation is a relationship on a set, generally denoted by “∼”, that is reflexive, symmetric, and transitive for everything in the set. Example: The relation “is equal to”, denoted “=”, is an equivalence relation on the set of real numbers since for any x, y, z ∈ R: 1.
How do you find equivalent reactions?
To calculate molar equivalents for each reagent, divide the moles of that reagent by the moles of the limiting reagent: Note that the molar equivalency of sodium benzoate is 1. This is because sodium benzoate is the limiting reagent. Any reagents used in excess will have a molar equivalency greater than one.
What 3 things happen in a chemical reaction?
Three things must happen for a reaction to occur.
- Molecules must collide.
- Molecules must collide with enough energy to begin to break the old bonds so new bonds can form. ( Remember activation energy)
- Molecules must collide with the correct orientation.
What 2 things always happen in a chemical reaction?
In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
What is single replacement in chemistry?
A single-replacement reaction is a chemical reaction in which one element replaces another in a compound. The general equation is. A + BC → AC + B.
How are single and double replacement reactions similar?
Key Takeaways. A single-replacement reaction replaces one element for another in a compound. A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds. A precipitation reaction is a double-replacement reaction in which one product is a solid precipitate.
What means equivalent fraction?
An equivalent fraction is a fraction that is the same as another fraction with a different denominator.