Chemistry Question Neutralization vs. Neutrality?

Neutralization refers to the reaction of acids and bases to produce salts and water, and the solution is not necessarily neutral after the neutralization reaction. 1.The acid-base does not necessarily happen to be a complete reaction; 2.Some salt solutions are not neutral, for example, sodium carbonate solution is alkaline, ammonium chloride solution is acidic, etc.

Hello, neutralization is a chemical reaction that refers to the reaction of an acid with a base to produce water.

Neutral means that the solution of a substance dissolved in water is neutral, that is, it is non-acidic and non-alkaline.

Hope that helps,

The complete reaction of acid and base means that it reacts exactly according to the amount of its substance, and the final solution is not necessarily neutral, such as: CH3COOH+NAOH==CH3COONA+H2O, the amount of CH3COOH and NaOH substances reacts exactly according to 1:1, but the solution is alkaline.

Therefore, it depends on what kind of salt is generated, such as strong acid and alkali salt, which is neutral; strong acid and weak alkaline salt, alkaline; Strong alkali weak salt, alkaline.

Neutrality is the result of neutralization, neutralization is a process, and neutrality is the state in which the concentration of hydrogen ions and hydroxide ions in the solution is equal.

Neutralization is the process of adding an acid solution to an alkaline solution or adding an alkaline solution to an acidic solution so that the solution is not acidic or alkaline. The solution is not acidic or alkaline, and the solution at this time is a neutral solution.

Neutralization is one of a kind"behavior"

Neutrality refers to the fact that an object has an equal number of positive and negative charges, so that it is not electrically external, and is a type of object"Status"

Complete neutralization means that the amount of acid-base substances is equal, and it happens to be completely reacted, but because the acidity of the acidity of the acid-base is not known, it is not necessarily neutral after the reaction;

Neutral after neutralization means that the pH = 7 of the solution after the reaction

1) Neutral: Neutrality refers to the fact that atoms are not electrically shown to the outside world. The charge carried by the nucleus is equal in number to the total negative charge carried by all the electrons outside the nucleus, and the whole atom is neutral.

The fact that an object is neutral does not mean that the object has no electric charge, but that the number of positive and negative charges in the object is equal. (2) Neutralization: Neutralization refers to the phenomenon of positive and negative charges canceling each other.

Neutralization refers to the phenomenon that when objects with the same amount of dissimilar charge come into contact, the charge is transferred, and the same amount of dissimilar charge completely cancels out, and finally both objects appear neutral.

Expansion: Neutralization can also occur if the object carries different amounts of positive and negative charge. In this case, the object with a large charge is first neutralized with a partial charge and an object with a low charge, and the remaining charge can make the two objects have the same charge.

Neutralization does not mean that the same amount of positive and negative charges is eliminated, in fact, the total amount of charges remains the same, but the same amount of positive and negative charges makes the object as a whole inelectric.

Neutral: In chemical terms, it means that hydrogen ion concentration = hydroxide ion concentration.

Neutralization: refers to acid-base neutralization. It doesn't have to be neutral.

The reaction in which acids and bases exchange components with each other to form salts and water is called neutralization. The neutralization reaction is a metathesis reaction. The neutralization reaction of a strong acid and a strong base is essentially H in an acid molecule

Reaction with OH- in the base molecule to form a water molecule that is difficult to ionize: H+

When OH-=H2O reaches the equivalence point (i.e., the stoichiometric point), the solution is neutral. The neutralization reaction of a strong base and a weak acid or a weak base and a strong acid, because the resulting salt is hydrolyzed, so the reaction is not neutral even at the equivalence point, the former is alkaline and the latter is acidic. In the acid-base neutralization reaction, the reactants react strictly according to the ratio of the amount of substances determined by the chemical equation.

And the amount of solute in the solution (moles) = molarity (moles) and the volume of the solution (liters). Thus, the concentration of the alkali (or acid) solution is calculated by using a known molar concentration of an acid (or alkali) solution completely neutralized with an unknown concentration of an alkaline (or acid) solution, the volume of the two is measured, and then the concentration of the alkaline (or acid) solution is calculated based on the ratio of the amount of acid to base species in the chemical equation.

Definition: Neutralization reaction.

neutralization

reaction) acids and bases exchange components with each other to form a reaction between salt and water. The neutralization reaction is a metathesis reaction.

Principle: The essence of the neutralization reaction is that H+ and OH- combine to form water (H2O). Acid + alkali salt + water.

For example, HCl+NaOH=NaCl+H2O

Note: There is a reaction of salt and water formation, not necessarily a neutralization reaction, such as: 2NaOH+CO2

na2co3+h2o

Therefore, as long as the reaction between acid and base occurs, it is called neutralization, no matter how far it is carried out. The criterion for judging whether the acid and base are completely neutralized is whether the acid and base are exactly completely reacting.

Reaction characteristics: There is always a difference between the theoretical value and the actual value in acid-base titration, let's take a look at this:

There are three important points in acid-base titration:

Equivalence point: the equivalent number of acids = the equivalent number of bases (the two are exactly completely reacting).

Endpoint: The point at which the indicator changes color.

Neutralization point: In the process of acid-base titration, it is easy to become a neutral point.

i.e. ph = 7 Note: (The equivalent point is the point that happens to be the perfect reaction).

The equivalent point is not necessarily equal to the endpoint.

Equivalence points are not necessarily neutral.

The equivalent point can not be directly observed, the strength of the acid and base is different during the titration, and the acidity and alkalinity of the solution are different when the titration end point is reached.

Indicator selection:

Neutralization titration of strong acids and bases.

At the same level as the pH 7 of the solution, phenolphthalein can be selected as an indicator, and methyl orange can be selected as an indicator

Neutralization titration of strong acids and weak bases.

The equivalent point solution is acidic, the solution pH is 7, it is best to choose methyl orange and methyl red as indicators, and generally do not choose phenolphthalein test solution as an indicator, because phenolphthalein solution does not change color when it encounters acid.

Neutralization titration of weak acids and strong bases.

The equivalent point solution is alkaline, pH 7, at this time, it is best to choose phenolphthalein as an indicator, and generally do not choose methyl red and methyl orange as indicators

Acid-base reaction produces heat:

Strong acid and alkali reaction, 1mol of hydrogen ion reacts with 1mol of hydroxide ion, h=

Because the reaction of hydrogen ions and hydroxide ions to produce water is reversible, and they are reacting all the time, but too many hydroxide ions and too many hydrogen ions react together, and the pH change is obvious, so it is said that they are reacting. Equilibrium is a reversible reaction, as long as equilibrium is actually a reaction, but it is just a reversible reaction.

The ion product of water is 10 -14, which is like this in solution.

The concentration product of H and OH alone reaches this value.

And after the addition of new substance, the equilibrium was broken.

pH balance is a very small amount of saying.

Very little H or very little OH.

If both H and OH are very much.

The only phenomenon is the violent reaction to produce water.