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Alum might be:
(In general 'alums' are mixed mono- and triple-valent 'metal ion' salts, MIMIII(SO4)2.12H2O )
- Potassium alum: KAl(SO4)2.12H2O
The Al3+ ion makes it rather acidic when dissolved, the pKa value is about the same as of acetic acid (4.8), so pH going down.
- If it is NH4.Fe(SO4)2.12H2O the acidic effect is more than 10 times stronger with pKa(Fe3+)= 2.2 !
What else can I help you with?
What is the pH of Alum?
The pH of alum (aluminum sulfate) can vary depending on its concentration and purity. Typically, a solution of alum will have a pH around 3-4, making it acidic.
How do you maintain different pH levels in connected tanks?
To maintain different pH levels in connected tanks, you can use individual dosing systems to add specific pH-adjusting chemicals to each tank. Monitor the pH levels regularly and adjust the dosing accordingly. It is also important to ensure proper water circulation between the tanks to prevent stagnation and pH imbalances.
What's the difference between alkalinity and pH levels in water?
Alkalinity measures the water's ability to resist changes in pH, while pH measures the acidity or basicity of the water. Alkalinity is a buffer against pH changes, while pH directly indicates the water's acid or base level.
How do you lower a lakes pH?
To lower a lake's pH, you can introduce acidic substances such as alum or sulfuric acid. These substances will react with the alkaline compounds in the water, neutralizing them and lowering the pH level. It's important to carefully monitor the pH levels and consult with a water quality expert before attempting to adjust the pH of a lake.
Why morpholine dosing better than ammonia dosing in boiler feed water?
Morpholine is often preferred over ammonia for dosing in boiler feed water because it has lower volatility, lower potential for corrosion, and it offers better pH stability. Additionally, morpholine provides effective protection against both acidic and alkaline corrosion in the boiler system, making it a more versatile and reliable option compared to ammonia dosing.
What is the pH of Alum?
The pH of alum (aluminum sulfate) can vary depending on its concentration and purity. Typically, a solution of alum will have a pH around 3-4, making it acidic.
What is the pH potash alum?
A pH over 7.
How does lime dosing to Waste-water in sewage treatment plant work?
Lime dosing to waste water treatment plant increases the pH value upto a permissible limit for disposal. Namit Sabharwal
Does cabbage juice change alum?
Yes, cabbage juice can change color when mixed with alum due to the pH changes that occur. Cabbage juice contains anthocyanins, which are pH-sensitive pigments. When alum, a basic compound, is added, it can alter the acidity of the solution, causing the cabbage juice to shift from its original color to shades of green or blue, depending on the concentration. This makes it a useful natural indicator for pH levels.
What is optimum pH of alum and FeCl3?
The optimum pH for alum is typically around 6.5-7.5, as this allows for effective coagulation and flocculation of suspended particles in water treatment processes. For FeCl3, the optimum pH is usually lower, around 5.0-6.0, to ensure the formation of positively charged iron hydroxide flocs for efficient removal of contaminants in water treatment applications.
Can you swim in a pool after applying alum?
After your pool is clear again, test the Ph of the water. You can purchase a test kit at your local pool or home and garden supply store. When the Ph of the water is at a safe level, you can dive in.
How do you maintain different pH levels in connected tanks?
To maintain different pH levels in connected tanks, you can use individual dosing systems to add specific pH-adjusting chemicals to each tank. Monitor the pH levels regularly and adjust the dosing accordingly. It is also important to ensure proper water circulation between the tanks to prevent stagnation and pH imbalances.
What's the difference between alkalinity and pH levels in water?
Alkalinity measures the water's ability to resist changes in pH, while pH measures the acidity or basicity of the water. Alkalinity is a buffer against pH changes, while pH directly indicates the water's acid or base level.
How do you lower a lakes pH?
To lower a lake's pH, you can introduce acidic substances such as alum or sulfuric acid. These substances will react with the alkaline compounds in the water, neutralizing them and lowering the pH level. It's important to carefully monitor the pH levels and consult with a water quality expert before attempting to adjust the pH of a lake.
Why morpholine dosing better than ammonia dosing in boiler feed water?
Morpholine is often preferred over ammonia for dosing in boiler feed water because it has lower volatility, lower potential for corrosion, and it offers better pH stability. Additionally, morpholine provides effective protection against both acidic and alkaline corrosion in the boiler system, making it a more versatile and reliable option compared to ammonia dosing.
What is the purpose of adding alum and lime in water treatment?
Alum (Aluminum Sulfate) is/was used to cause particles in water (mud) to coagulate and settle to the bottom to obtain clear water off the top. That is, it is used to make muddy or cloudy water clear as a first step in turning river water into drinking water. Nowadays, polymers are used instead. Some say that Alum causes alzeimers (1970's) but if that is true, the information was successfully hushed while most of America drank water treated with alum for decades. Lime is used to adjust the ph that is lowered by the alum. There is also a process using lime that actually removes hardness (calcium and magnesium) from drinking water obtained from limestone aquifers. This process is called Lime Soda Softening.
Why doesn't water resist changes in pH?
Water does resist changes in pH to a degree due to its capacity as a buffer, but it can still experience fluctuations in pH when acids or bases are added. This is because pure water has a neutral pH of 7, but it can dissociate into hydrogen ions (H⁺) and hydroxide ions (OH⁻), allowing it to react with added substances. However, if the amount of acid or base exceeds the buffering capacity of water, significant changes in pH can occur. Therefore, while water can moderate pH changes, it is not impervious to them.
