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phenolphthalein alkalinity is due to hydroxide n carbonate salts in water...nd total alkalinity is mainly due to bicarbonate salts in water..

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Q: Difference between phenolphthalein alkalinity and and total alkalinity?
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Will soda ash raise pool alkalinity?

In some cases, soda ash can be used to raise total alkalinity. Pound for pound, soda ash raises alkalinity 60 percent more than sodium bicarbonate and is cheaper than sodium bicarbonate. The problem with using soda ash to increase alkalinity is it drastically increases pH. This can cause cloudy water and scale formation. Soda ash should only be used to increase total alkalinity if you also need to increase the pH or if only small increases in alkalinity are needed.


What does the mean of m alkalinity and p alkalinity in boiler water?

1. M-Alkalinity (also known as Total Alkalinity) measures the amount of carbonate, bicarbonate and hydroxide present in terms of "ppm as calcium carbonate". ( M-Alkalinity measurement is based on a sulphuric acid titration using a Methyl orange indicator that goes from yellow at a pH of 4.5 to orange at pH of 4.4 at the endpoint.) 2. P-Alkalinity measures the amount of carbonate and hydroxyl alkalinity present in terms of "ppm as calcium carbonate". P-alkalinity is measured down to a pH of 8.3. The M-alkalinity is measured down to a pH of 4.3.


What will result if sodium bicarbonate is used to lower ph in a swimming pool?

Bicarbonate will RAISE the pH and total alkalinity.


Why is pH low but alkalinity high?

Your tests are referring to total alkalinity, not the alkaline nature of something. Total alkalinity (TA) is the amount of pH buffering capability of your water. Low TA allows for pH to change rapidly. High TA on the other hand makes changing pH difficult. Generally speaking, you want your TA to be between 80-120. This allows you to be able to change the pH without difficulty, but prevents pH from "drifting" on its own. Again, generally speaking, pH and TA are lowered together but can be raised separately. Always adjust alkalinity first. If a large amount of adjustment is required, do it over a period of a few days. Then re-test for pH and adjust if required last.


What does ppm refer to on a pool test strip?

Total alkalinity is closely associated with pH but rather than a measure of hydrogen ion concentration it is a measure of the ability of a solution to neutralize hydrogen ions. Expressed in parts per million (ppm), total alkalinity is the result of alkaline materials including carbonates, bicarbonates and hydroxides - mostly bicarbonates. This acid neutralizing (buffering) capacity of water is desirable because it helps prevent wide variations in pH whenever small amounts of acid or alkali are added to the pool. Total alkalinity is a measure of water's resistance to change in pH.

Related questions

Why methyl orange alkalinity equal to total alkalinity?

Alkalinity is different from basicity, which is directly related to the pH. The higher the pH, the more basic the water.Like acidity, there are different ways to measure and report alkalinity;The first is to titrate the water with acid titrant to the phenolphthalein end point. This is called the phenolphthalein alkalinity. Since phenolphthalein changes color at pH~8.3, this corresponds to a pH where all the CO32- present would be protonated.Second, acid titration to a methyl orange end point, pH~4.3, further converts the bicarbonate to aqueous carbon dioxide. At this end point, some of the weaker conjugate bases are protonated. The methyl orange end point titration indicates total alkalinity.


What is the difference between thedolite and total station?

What is the difference between theodolite and total station?


What causes low total alkalinity?

Improperly sanitized water or excessive rainfall can cause a low total alkalinity level in your pool. Low total alkalinity can cause pool staining, itchy and burning eyes and skin, and corrosion of metal parts in the pool.


What is the difference between total customer value and total customer cost?

The difference between total customer value and total customer cost is__________.


What causes low alkalinity?

Improperly sanitized water or excessive rainfall can cause a low total alkalinity level in your pool. Low total alkalinity can cause pool staining, itchy and burning eyes and skin, and corrosion of metal parts in the pool.


Will chlorine shock raise the TA?

Chlorine will not raise the total alkalinity level in a pool. However, if you are trying to raise the total alkalinity, you can add small amounts of baking soda.


If pool water is clear but surfaces are slippery is this algae?

It could be, but sounds more like hi alkalinity. Check your TA ( total alkalinity ) It should be between 80-120 ppm. You can bring it down using muriatic acid if you need to.


Will adding a flocculant to the pool water lower the Total Alkalinity?

No


Is alkalinity dangerous for humans in swimming pools?

Alkalinity is not an actual "chemical", however if you are concerned about increasing the alkalinity in your swimming pool, you are perfectly safe. The chemical that increases "total alkalinity" in a swimming pool, is only baking soda. It wil not harm the human body!


What is the diffrence between thedolite and total station?

What is the difference between theodolite and total station?


What is the difference between the sum and the total?

what is the meaning of sum? and total


What is different between hardness and alkalinity?

There exist three species of alkalinity; bicarbonate, carbonate and hydroxide. The concentration of each species will vary with pH. Total alkalinity is the measurement of all species of alkalinity in the water. The concentration of each of the three species can be determined by titrating a water sample with acid of a known concentration and using chemical indicators, phenolphthalein (P indicator),methyl orange (M indicator), or a pH meter to determine "endpoints". The chemical indicators change color at a certain pH points(the endpoint). The mix of alkaline species change as pH decreases. Hydroxide alkalinity disappears below pH 10.3, carbonate below 8.3 and bicarbonate below 4.3 (or thereabout). The P indicator turns from pink to clear at or below pH 8.3 The M indicator turns from orange to yellow below pH 4.3. The amount of acid required to produce a color change is used to calculate the amount of P and M alkalinity. The P and M results are use to calculate "O" or hydroxide alkalinity. Depending on the ionic constituents of the water, these relationships can change or be interfered with.