net ionic equation
(noun)
a method or writing a precipitation reaction without spectator ions
Examples of net ionic equation in the following topics:
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Precipitation Reactions
- This is known as the complete ionic equation:
- A final way to represent a precipitation reaction is known as the net ionic equation.
- Without the spectator ions, the reaction equation simplifies to the following:
- Distinguish ways to write precipitation reactions (complete ionic equation and net ionic equation) and use a solubility table to determine whether a precipitation reaction will occur
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Electrochemical Cell Notation
- The net ionic equation for the reaction is written:
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Molecular, Ionic, and Complete Ionic Equations
- Precipitation reactions can be written as molecular, ionic, or complete ionic equations.
- The resulting equation is known as the complete ionic equation, and it looks as follows:
- In this equation, every ion is written out on both sides.
- This can be simplified to the net or complete ionic equation, which is shown below:
- Recognize whether a chemical equation is written in molecular, ionic, or complete ionic form.
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Types of Bonds
- Pure ionic bonding cannot exist: all ionic compounds have some degree of covalent bonding.
- Thus, an ionic bond is considered a bond where the ionic character is greater than the covalent character.
- Bonds with partially ionic and partially covalent character are called polar covalent bonds.
- If one atom has a higher electronegativity, the electrons will be drawn closer to the nucleus of that atom, resulting in a small net charge around each nucleus of the atoms in the molecule.
- A rule of thumb is that covalent compounds are more difficult to change than ionic compounds.
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Naming Ionic Compounds
- An ionic compound is named first by its cation and then by its anion.
- In chemistry, an ionic compound is a chemical compound in which ions are held together by ionic bonds.
- Positive to positive and negative to negative ionic bonds do not occur.
- Since the net charge of the ionic compound must be zero, the Cu ion has a 2+ charge.
- The Roman numerals in fact show the oxidation number, but in simple ionic compounds this will always be the same as the metal's ionic charge.
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Lattice Energy
- Lattice energy is a measure of the bond strength in an ionic compound.
- Lattice energy is an estimate of the bond strength in ionic compounds.
- It is defined as the heat of formation for ions of opposite charge in the gas phase to combine into an ionic solid.
- Lattice energies are also important in predicting the solubility of ionic solids in H2O.
- Ionic compounds with smaller lattice energies tend to be more soluble in H2O.
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Ions
- Any atom or molecule with a net charge, either positive or negative, is known as an ion.
- Anions have more electrons than protons and so have a net negative charge.
- Cations have more protons than electrons and so have a net positive charge.
- Periodic Properties: Part 3, Ionic Radius, Predicting Ionic Charges - YouTube
- A continuation of the discussion of periodic properties, including ionic radius and how to predict ionic charges.
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Salt Formation
- Because of their enhanced acidity, carboxylic acids react with bases to form ionic salts, as shown in the following equations.
- In the case of alkali metal hydroxides and simple amines (or ammonia) the resulting salts have pronounced ionic character and are usually soluble in water.
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Electrolysis of Sodium Chloride
- As we have covered, electrolysis is the passage of a direct electric current through an ionic substance that is either molten or dissolved in a suitable solvent.
- Well, we can't forget that we have to factor water into the equation.
- The net process is the electrolysis of an aqueous solution of NaCl into industrially useful products sodium hydroxide (NaOH) and chlorine gas.
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Salts that Produce Basic Solutions
- In acid-base chemistry, a salt is defined as the ionic compound that results from a neutralization reaction between an acid and a base.
- As such, salts are composed of cations (positively charged ions) and anions (negative ions), and in their unsolvated, solid forms, they are electrically neutral (without a net charge).
- For a generalized anion B-, the net ionic reaction is: