Brilio.net - As societal civilization develops, environmental problems become increasingly serious. For example, pollution is increasing due to vehicles and industrial activities, water quality is decreasing, waste management is difficult to recycle and various other problems.
One way to determine the condition of air, water and soil pollution levels is to use Chemical PPM. PPM is an important parameter that functions to monitor pollution in the environment around you. So what is PPM?
In simple terms, PPM is an abbreviation for parts per million or what is usually called parts per million, which is a ratio of concentration units used in the field of chemistry. Calculating PPM for Chemistry is not too difficult, you just need to read this article to understand more about PPM for Chemistry. This article not only explains the meaning of PPM but there is a PPM Chemistry formula, function, example questions and discussion that are easy to understand.
The following is the Chemical PPM Formula, understand the concept and how to quickly calculate it, reported by brilio.net from various sources on Friday (2/2)
What is PPM?
Chemical PPM Formula
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PPM or parts per million is a unit used to measure the concentration of a substance in a solution. This method is used to express very small concentrations, and is often used to measure pollutants in water and air.
For example, measuring pollutant levels in water, such as nitrates, phosphates, pesticides; measure levels of pollutants in the air, such as carbon dioxide, sulfur dioxide, and nitrogen dioxide; measuring mineral levels in foods, such as calcium, iron, or zinc; and measuring drug levels in human blood. You could say, PPM Chemistry is an important unit for understanding environmental quality and human health.
Apart from having many uses, it seems that the Chemical PPM formula also has advantages and disadvantages that you need to understand. The following are the advantages and disadvantages of the Chemical PPM formula:
Excess:
- Easy to use and understand.
- Allows to measure very small concentrations.
- It is universal and can be used in various fields.
Lack:
- Does not always provide sufficient information about the concentration of substances.
- It is difficult to compare concentrations in ppm if the substances being measured have different molar masses.
Next, the way to calculate the Chemical PPM formula uses a separate formula. The formula for calculating concentration in PPM units is:
Chemical PPM Formula
Chemical PPM Formula
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ppm = (Amount of Substance / Total Particles) x 1,000,000
Information:
- Amount of Substance: This is the mass or volume of the substance whose concentration you want to measure.
- Total Particles: Represents the total mass or volume of the mixture.
- 1,000,000: Conversion factor to convert results to parts per million.
Chemical PPM formula function
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The PPM (parts per million) formula in chemistry has several important functions, including:
1. Measuring Very Small Concentrations of Substances.
The main function of the PPM formula is to measure the concentration of very small substances in a mixture. This is important because many substances are present in very small amounts, but have significant effects on the properties and behavior of the mixture. For example:
- Pesticide concentration in drinking water.
- Concentration of air pollutants such as carbon dioxide and sulfur dioxide.
- Mineral concentration in food.
- Drug levels in the blood.
2. Comparing Substance Concentrations in Various Samples.
The PPM formula allows anyone to easily compare the concentrations of substances in various samples, even if the samples have different volumes or masses.
Example:
- Comparing pollutant levels in the air in various cities.
- Compare mineral levels in various types of vegetables.
- Comparing drug levels in the blood of different patients.
3. Calculate the amount of substance in the sample.
By knowing the concentration of a substance in PPM units and the volume or mass of the sample, you can calculate the amount of substance contained in the sample.
Example:
- Calculate the amount of pesticide in 1 liter of drinking water.
- Calculate the amount of air pollutants in 1 cubic meter of air.
- Calculate the amount of minerals in 100 grams of vegetables.
4. Perform chemical analysis.
The PPM formula is used in various chemical analyses, such as:
- Titration, to determine the concentration of a substance in a solution.
- Spectrophotometry is to measure the absorption of light by a substance and determine its concentration.
- Chromatography, to separate and identify substances in mixtures.
5. Monitor Environmental Quality.
In principle, the PPM formula is used to monitor water, air and soil quality. It could be said that the PPM formula is important to ensure that the environment currently occupied is safe and healthy for humans and other living creatures.
Example:
- Monitor pollutant levels in air and water.
- Monitor pesticide levels in food.
- Monitor mineral levels in the soil.
Based on this explanation, it can be understood that the chemical PPM formula has many important functions in various fields of science. By understanding the PPM formula, you can measure the concentration of very small substances, compare concentrations in various samples, calculate the amount of substance in a sample, or carry out chemical analysis. Apart from that, the PPM formula can also help the wider community to monitor environmental quality.
Examples of questions about the Chemical PPM formula and their solutions.
Chemical PPM Formula
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Examples of questions about the PPM Chemical Formula and their solutions
1. How many ppm are 10 mg of solute dissolved in 1 L of solution?
Solution:
PPM formula: ppm = (mass of solute / mass of solution) x 1,000,000
Is known:
- Mass of dissolved substance: 10 mg
- Mass of solution: 1 L = 1,000,000 mg
- ppm = (10 mg / 1,000,000 mg) x 1,000,000 = 10 ppm
So, the ppm of 10 mg of solute in 1 L of solution is 10 ppm
2. What mass of solute is contained in 500 mL of a solution with a concentration of 20 ppm?
Solution:
Solute mass formula: solute mass = ppm x solution mass
Is known:
- Concentration: 20 ppm
- Mass of solution: 500 mL = 500 g (assuming the density of water is 1 g/mL)
- mass of solute = 20 ppm x 500 g = 10 mg
So, the mass of solute contained in 500 mL of a solution with a concentration of 20 ppm is 10 mg
3. What volume of water is needed to dissolve 25 mg of solute so that the concentration is 50 ppm?
Solution:
Solution volume formula: solution volume = (mass of solute / ppm) x 1,000,000
Is known:
- Mass of dissolved substance: 25 mg
- Concentration: 50 ppm
- volume of solution = (25 mg / 50 ppm) x 1,000,000 = 500,000 mL = 500 L
So, the volume of water needed to dissolve 25 mg of solute so that the concentration is 50 ppm is 500 L
4. A factory produces 100,000 liters of waste water per day. The wastewater contains 10 ppm lead. How many grams of lead do factories dump into the environment every day?
Solution:
Is known:
- Mass of lead: mass of lead = ppm x mass of waste water
- Lead concentration: 10 ppm
- Mass of waste water: 100,000 L = 100,000,000 g
- Mass of lead = 10 ppm x 100,000,000 g = 1,000,000 mg = 1 kg (mass of 1,000,000 mg converted to kilograms becomes 1 kg)
So, the factory discharges lead water into the environment every day is 1 kg
5. A water sample is contaminated with 2 ppm of mercury. How many grams of mercury are contained in 1000 L of polluted water?
Solution:
Solute mass formula: mass of solute = ppm x volume of solution
Is known:
- Mercury concentration: 2 ppm
- Water volume: 1000 L
- Mass of solute = 2 ppm x 1000 L x 1,000,000 mg/L = 2,000,000 mg = 2 g
So, the mercury contained in 1000 L of polluted water is 2 grams.