All ionic reaction equations in high chemistry

I'm a chemistry teacher in my first year of high school, so what's the use of giving you all the ion equations? The key to science is to understand, just take a good look at the steps of writing the ion equation in the book and digest it. Just pay attention to what should be dismantled and what can't be dismantled, and the ion equation is not too difficult to learn.

Thunderstorms send crops related to 3.

Chemical equation.

n2+o2=2no

2no+o2=2no2

3no2+h2o=2h

no3+2no

Industry. Synthetic ammonia.

n2+3h2=2nh3

Charcoal put in. Concentrated nitric acid.

c+4hno3

4no2+co2+2h2o

The reason why nitric acid is placed in a dark and low temperature place: (chemical equation) 4Hno3 = 2H2O + 4NO2 + O2

Industrially produced nitric acid.

3 related chemical equations.

4nh3+5o2=6h2o+4no

2no+o2=2no2

3no2+h2o=2hno3+2no

The chemical equation for the reaction of ammonia with water is sum.

Ionic equations.

nh3+h2o=

nh3·h2o

nh3+h2o=nh4++oh-

The basic steps to write the ion equation are:

Write": Write the chemical equation about the reaction.

Dismantling": Soluble strong electrolytes (strong acids, strong bases, soluble salts) are represented by ion symbols, and other insoluble substances, gases, water, etc. are still expressed by molecular formulas. Slightly soluble strong electrolytes should be seen to see if they exist mainly in the form of free ions, e.g., Ca(OH)2 in lime water is represented by ionic symbols, and Ca(OH)2 in lime milk is expressed by molecular formulas.

Due to the presence of mainly sulfuric acid molecules, the chemical formula is also written. Concentrated nitric acid and hydrochloric acid are written as ionic formulas.

Delete": Remove ions on both sides of the equation that do not participate in the reaction.

Check": Check whether the number of atoms and the number of charges on both sides of the formula are equal (to see whether they are balanced), and also see whether the obtained stoichiometric number of the formula is the simplest integer ratio, if not, it should be reduced to the simplest integer ratio.

There are six things to look at when judging whether the ion equation is correct or not

First, whether it conforms to objective facts;

Second, see whether the chemical formula or ion symbol representing each substance is correct;

Third, look at the conservation of charge and the conservation of mass;

Fourth, see if the reaction is omitted;

Fifth, see whether the ratio of reactants or products is correct;

Sixth, see whether the "long equal sign", "reversible number", "gas number" and "precipitation number" are correct.

Error-prone analysis of this paragraph:

All oxide peroxides are written in a unified chemical formula, and beginners are easy to ignore, and only soluble and easily ionized electrolytes are represented by ion symbols, which often disassemble many insoluble strong electrolytes, resulting in errors. It must be clear here that active metal oxides like sodium peroxide, sodium oxide, etc., or peroxides, although soluble electrolytes.

There are also strong soluble electrolytes like sodium bicarbonate, but sometimes (e.g. carbon dioxide into saturated sodium carbonate) is also written as a chemical formula, depending on whether it is mainly in the form of a solid substance or in the form of ions in solution.

Acid salts of strong acids, such as sodium bisulfate, should be divided into sodium ions, hydrogen ions and sulfate ions (only bisulfate belongs to this category in high schools); Weakly acid acid salts such as sodium bicarbonate are split into sodium ions and carbonic acid ions (acid salts such as carbonic acid, phosphoric acid, sulfurous acid, etc. are all of this type).

Weak electrolytes, non-electrolytes, oxides, elemental matter, precipitation, and gases cannot be disassembled.