Calculation of the pH value of the mixed solution, and the formula for calculating the pH value of t

H ion Volume: Solution Volume v= Hydrogen Ion Concentration:. So the pH is 3-4lg2.

The general idea of the conclusion is to determine the hydrogen ion content in the solution, then determine the volume of the solution, and finally find the hydrogen ion concentration. If it is a mixture of two acids, it should be noted that it is a few acids.

In the case of alkali mixing, the hydroxide concentration is required, and then the hydrogen ion concentration is determined according to the product of the hydroxide concentration and the hydrogen ion concentration as a fixed value. In the case of acid-base mixing, it is necessary to determine the acidity and alkalinity of the final solution (in this case, the volume of water produced by the neutralization reaction is negligible).

The pH value is the logarithm of the concentration of hydrogen ions in the solution.

Therefore, first find the hydrogen ion concentration [h] (ignoring the ionization of water).

h】=（ +

ph= -lg【h】

3-lg16 or =

3-4lg2 is approximately equal to =

After calculation, the concentration of hydrogen ions is negative to the power, and the pH is 3-LG16

ph=-lgc(h+)。

The formula for calculating pH of the solution is: pH=-LGC (H+). The hydrogen ion concentration index is the ratio of the total number of hydrogen ions in a solution to the amount of total substances.

It is generally referred to as "pH", not "pH". For the determination of hydrogen ion activity index, the qualitative method can be determined by using pH indicator and pH test paper, while the quantitative pH measurement needs to be determined by pH meter.

Difference in pH of a solution:

The pH value of the solution is an indicator to measure the acidity and alkalinity of the solution, the smaller the value, the stronger the acidity, the larger the value, the stronger the alkalinity, and the pH value of the neutral solution is 7. Solutions with different pH values have different properties and application scenarios, and solutions with pH values less than 7 are acidic solutions, which are corrosive and are usually used in scenarios such as removing stains and cleaning stainless steel utensils.

A solution with a pH value equal to 7 is a neutral solution, and a neutral solution is usually used in scenarios such as neutralization tests in chemical tests. Solutions with a pH value greater than 7 are alkaline solutions, which are less corrosive and are usually used in scenarios such as cleaning greasy kitchens. The solution with a pH value between 7 and 14 is a strong hail alkaline solution, and the agitated strong alkaline solution has the characteristics of strong corrosiveness, and is usually used in scenarios such as cleaning chemical laboratory equipment.

The basic process is to calculate first.

c（h+)。Then use the formula.

ph=-lgc(h+)

If it is a mixture of acid solutions, it is generally a strong acid.

If the acid is strong, first calculate the total H+ concentration in the solution, and note that the volume is equal to the sum of the volumes of the two solutions. (approximately, ignoring volume changes).

If it is a mixture of alkali solution, the calculation is mainly strong alkali + strong alkali, which must be calculated first.

The concentration of OH- (because in the mixing, the amount of OH- is conserved), and then according to the ion product of the stool hydroplaning.

Calculate it. c(h+), and lastly.

If the pH is mixed with acid-alkali solution, it is also a strong acid + strong alkali, and it must be judged excessively.

If there is an excess of acid, then the concentration of excess H+ is calculated, if there is an excess of alkali, then the concentration of OH- is calculated first, then the concentration of H, and finally PH

Such as 0 2mol lhcl 0 05mol lnaoh volume ratio.

Mix 3:2 and find the mixed solution.

PHC(H+) =

ph=1

Empirical liquid ignition type: equal volume mixed friend, the difference between the pH of the two lyes = 2, pH mixed = large. The difference is equal to 1, and the pH mix = large.

The difference between the pH of the two acids = 2, and the pH mix = small +. The difference is equal to 1, and the pH mix = small +. We don't need to log because it's the logarithm of a special value, and we have to look it up in a table or use a calculator.

PH=-lgc(H+) The rest is to calculate the molar concentration of hydrogen ions in the whole solution.

It is obtained by calculating the concentration of hydrogen ions.