Difference Between Acidity and pH The relationship between acidity and pH

The relationship between acidity and pH is as follows:

1.The higher the value of acidity, the more acidic the solution is, which is in line with the language conventions defined by physics.

2.The logarithm is the dimensionless ratio, and the logarithmic function returns the same dimensionless, which is in line with the characteristics of the logarithmic function.

3.Regardless of the temperature, a neutral solution ag will always be 0. In contrast, it is customary to assume that a neutral solution at 25 degrees Celsius has a pH = 7, and a neutral solution at other temperatures has a pH of not 7.

pH is the concentration of hydrogen ions in the solution, which is used to indicate the pH of the solution, and Poh is the concentration of hydroxide ions in the solution. They all indicate pH.

The greater the acidity, the lower the pH.

The pH is equal to the negative logarithm of the concentration of hydrogen ions.

Acidity should be a concentration value with a hydrogen ion concentration of less than 7.

ph=-lg[h+]

pH is the negative logarithm of the concentration of hydrogen ions.

What about acidity. Maybe it's the opposite.

Acidity is the concentration of hydrogen ions, expressed in pH, which is equal to the negative logarithm of the concentration of hydrogen ions. So the higher the pH, the less acidity; Conversely, the more acidity there is.

Summary. Hello, I'm glad to answer for you, dear, the formula for converting pH to acidity is: ph== lgc(h+) for example, ph=1 then c(h+) = mol l.

For example, if you know that the pH value is, how do you convert it into acidity? pH ==lgc(H+) then ph= , C(H+)=10 to the power.

pH converted to acidity??

Hello, I'm glad to answer for you, dear, the formula for converting pH to acidity is: ph== lgc(h+) is better than ph=1 then c(h+) = mol l. For example:

The pH value has been changed to how to convert it to acidity? PH ==LGC(H+) is balanced to the power of PH= ,C(H+)=10.

Affinity, acidity is expressed by Sorantan AG, the relationship between AG and pH: AG=14-2pH, that is, Ag>0 in acidic solutionag=0 in neutral solution and ag<0 in alkaline escort solutionThe calculation of the upstairs is that when Shitong PH=1, AG=14-1*2=12

To know only the pH of a substance is to ask what is the acidity?

Dear, only know the pH value of a certain substance is asking what is the acidity? The answer is as follows: Knowing that the pH value is, how to collapse the source of his conversion into acid grinding? pH ==lgc(H+) then ph= , C(H+)=10 to the power. Boy Crack Bucket.

What's that number?

Kiss, the value is 10 to the power.

Connection: In pH, the relative magnitude of the concentrations of [H] and [OH] is acidic at any temperature when the solution [H] >OH].

Differences: First, the essence is different.

1. pH value: the ratio of the total number of hydrogen ions in the solution to the total amount of substances.

2. Acidity: the total amount of substances in the aqueous solution that can neutralize with strong alkalis, including inorganic acids, organic acids, strong acids and weak alkali salts, etc.

Second, the measurement methods are different.

1. Acidity. 1) Acid-base indicator titration.

Water samples are titrated to a certain pH with a standard sodium hydroxide solution, and acidity is calculated based on the amount of sodium hydroxide solution consumed. Depending on the indicator used, acidity is usually divided into two categories: one is phenolphthalein as an indicator (the pH of its discoloration is called total acidity (phenolphthalein acidity), including strong and weak acids.

The other type is to use methyl orange as an indicator. (The pH of the fading is approximate, and the measured acidity is called strong acidity and methyl orange acidity.) The unit of acidity is mg l (in terms of CaCO3 or CAO).

2) Potentiometric titration.

The acid-alkali glass electrode is the indicator electrode, and the saturated calomel electrode is the reference electrode, and the primary battery is composed of water samples, which is connected to the pH meter. Titrate the NaOH standard solution to a pH meter, indicated and. Based on the volume of sodium hydroxide standard solution consumed, the two acids were calculated separately.

This method is suitable for the determination of acidity of various water bodies, and is not limited by the color and turbidity of water samples. Attention should be paid to the influence of temperature, stirring state and reaction time during the measurement.

2. PH value.

1) Use a pH indicator. When a pH indicator is added to the solution to be measured, different indicators will change color according to different pH values. Through the study of indicators, the range of pH can be determined. Accurate pH standards can be used for titration.

2) Use pH test strips. There are a variety of pH test strips and precision test strips. A glass rod is dipped in a little solution to be tested and immersed in the test strip. Then, according to the color change of the test strip, the pH value of the solution is obtained by comparing it with the standard color card.

pH test paper cannot show the pH of the oil because the pH test paper measures the pH of the solution to be measured with hydrogen ions, but there are no hydrogen ions in the oil, so the pH test paper cannot show the pH of the oil.

3) Use a pH meter. A pH meter is an instrument that determines the pH of a solution. It measures the pH of a solution by means of a pH-selective electrode, such as a glass electrode. The pH meter can be accurate to two decimal places.

Acidity: In environmental chemistry, acidity refers to the total amount of substances in water that can neutralize with strong alkalis, including inorganic acids, organic acids, strong acids and weak alkali salts, etc.; For example, using a NaOH enucleation chamber titration solution, using a phenolphthalein indicator, and after reaching the endpoint, the amount of NaOH used can be used to indicate alkalinity.

Alkalinity: Alkalinity is a parameter that characterizes the ability of water to absorb protons, and is usually calibrated by the total amount of substances contained in water that can quantitatively interact with strong acids; For example, using H2SO4 to titrate a solution, using a methyl orange indicator, and after reaching the endpoint, the amount of H2SO4 used can be used to indicate acidity.

PH: PH English full name hydrogen ion concentration, hydrogen ion concentration index. The application range of pH is between 0-14, and the water is neutral when pH=7; At pH 7, the water is alkaline, and the higher the pH, the greater the alkalinity of the water.

Therefore, acidity and alkalinity refer to a wider range of objects than the bucket, and the pH corresponds to the concentration of hydrogen ions in the dissolution spill.