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The mineral calcite is a major component of rocks known as limestone. Limestones are very abundant and are quarried for crushed stone and dimension stone for use in concrete, road paving, fill and construction of buildings and homes. Calcite is found both as a bulk component of limestone and as a discrete mineral in open spaces where the limestone has cracked or in irregular openings called vugs and quartz lined cavities called geodes.
Calcite is only slightly soluble in water (0.0145 gram per liter of water at 17oC = 63oF). It is much more soluble in water that has dissolved carbon dioxide gas in it. This property of calcite causes limestone to dissolve when groundwater flows through it. Where the limestone is dissolved and eaten away by carbon dioxide charged groundwater, openings called caves and sinkholes are left behind. When groundwater that is saturated with dissolved calcite reaches an open space, like a cave, the carbon dioxide dissolved in it turns into a gas again and the water can no longer hold as much calcite. The excess calcite precipitates out as cave formations (stalactites and stalagmites) or as a type of rock called travertine. This interesting property of calcite leads to places of great beauty such as caves and also creates hazards such as sinkholes
that may collapse underneath us.
Calcium carbonate, used in gasoline spill site remediation can form calcite. Certain chemical reactions with farm chemicals {fertilizers such as
amonium nitrate}, may occur to form calcium oxilate. This is, interestingly enough, the same chemical composition as kidneystone formations in
a human. Since the function of the human kidney is to filter the blood, theoretically, kidneystones may be formed from consumption of well water
contaminated by a specific combination of farm chemicals, and the chemicals used to remediate gasoline spill sites, such as a leaking gasoline
underground storage tanks. According to EPA sources, millions of gallons of refined gasoline are released into our groundwater from leaking gasoline underground storage tanks DESPITE the repalcement of old style tanks, and DESPITE the implementation new requirements for these tanks.
**Thoeretically... this is how calcium oxilate could be found in the urine of children.
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Which calcium salts precipitate?
Examples are: calcium carbonate, calcium oxalate, calcium fluoride etc.
What happens when calcium oxalate monohydrate is heated?
According to thermogravimetric data from DSC analysis, the first step releases water to form the anhydrous salt but upon further heating this step is followed by an oxidative (disproportionation) decomposition step in which carbon monoxide and calcium carbonate are formed. The third and final step is the decomposition of calcium carbonate to form calcium oxide and carbon dioxide. Because of step 2, good ventilation should be used during decomposition of calcium oxalate.
Why is there a white coating on calcium?
The white coating on calcium metal is calcium that has reacted with the oxygen in the air to form calcium oxide
What is the ionic compound for calcium and chlorine?
We know that the alkaline earth metal calcium (Ca) and the halogen bromine (Br) form the ionic compound calcium bromide (CaBr2). Here's the reaction: Ca + 2Br => CaBr2
Is calcium reactive with air?
Yes. Calcium will quickly form a coating of calcium oxide on contact with air.
Does calcium in milk combine with oxalates in tea to form calcium oxalate?
no
Kidney stones are least likely to be composed of?
Calcium stones are the most common type of kidney stone and occur in two major forms: calcium oxalate and calcium phosphate. ...Uric acid stones form when the urine is persistently acidic. ...Struvite stones result from kidney infections
What can be the viva questions on oxalate ions?
Oxalates are salts of oxalic acid containing oxalate ion. Oxalate ion is a dianion. Upon protonation, oxalate ion forms a commonly known compound, oxalic acid. The commonly known oxalate salts are sodium oxalate, potassium oxalate etc. The calcium metal ion reacts with oxalate ion to form an insoluble precipitate of calcium oxalate, which is the primary constituent of most of the common kind of Kidney stones.
Why you use oxalate potassium in formol titration?
In formol titration, amino acids with formaldehyde are titrated with NaOH to measure the amount of amino acids in the solution. Potassium is also necessary for this titration and is supplied by using potassium oxalate. If calcium is present, it will react with the NaOH to form Ca(OH)2. This will make it appear to need more of the NaOH solution (and overestimate the titration). Potassium oxalate will chelate the calcium, and prevent it from reacting (forming calcium oxalate).
Which calcium salts precipitate?
Examples are: calcium carbonate, calcium oxalate, calcium fluoride etc.
Why is taro toxic when raw?
In its raw form the plant is toxic due to the presence of calcium oxalate, although the toxin is destroyed by cooking.
What happens when calcium oxalate monohydrate is heated?
According to thermogravimetric data from DSC analysis, the first step releases water to form the anhydrous salt but upon further heating this step is followed by an oxidative (disproportionation) decomposition step in which carbon monoxide and calcium carbonate are formed. The third and final step is the decomposition of calcium carbonate to form calcium oxide and carbon dioxide. Because of step 2, good ventilation should be used during decomposition of calcium oxalate.
What is the type of Global Calcium Oxalate Market By Form?
The global Calcium Oxalate market was valued at USD 687.7 Thousand in 2021 and is projected to reach USD 949.9 Thousand by 2027, expanding at a CAGR of 4.7% during the forecast period. Read More: Growth Market reseach
What is tagalog of kidney stones?
Kidney stones are mineral rich solids formed from chemicals such as salts and calcium in the urine (which when it crystallizes becomes salt calcium oxalate).They can occur in any urine collecting part of the kidney e.g. the renal elvis or the calyx. Stones can grow in various shapes and sizes, and can take years to form. They can remain in the kidney and cause few problems but they can increase the risk of urinary tract infections. They can be extremely painful.
What conditions might predispose a person to kidney stones?
There are several types of kidney stones, but the most common are calcium oxalate stones, followed by calcium phosphate stones.A variety of foods contain oxalates, which are usually bound up with other compounds in the intestines. When oxalates make it to the kidney, they bind with calcium and can form stones."Calcium oxalate stonesThe most common type of kidney stone is composed of calcium oxalate crystals, occurring in about 75 to 80% of cases,[9] and the factors that promote the precipitation of crystals in the urine are associated with the development of these stones.Perhaps counter-intuitively, current evidence suggests that the consumption of low-calcium diets is associated with a higher overall risk for the development of kidney stones.[2] This is perhaps related to the role of calcium in binding ingested oxalate in the gastrointestinal tract. As the amount of calcium intake decreases, the amount of oxalate available for absorption into the bloodstream increases; this oxalate is then excreted in greater amounts into the urine by the kidneys. In the urine, oxalate is a very strong promoter of calcium oxalate precipitation, about 15 times stronger than calcium.Uric acid (urate)About 5-10% of all stones are formed from uric acid.[9] A risk factor is obesity.[21] Uric acid stones form in association with conditions that cause hyperuricosuria with or without high blood serum uric acid levels (hyperuricemia); and with acid/base metabolism disorders where the urine is excessively acidic (low pH) resulting in uric acid precipitation. A diagnosis of uric acid nephrolithiasis is supported if there is a radiolucent stone, a persistent undue urine acidity, and uric acid crystals in fresh urine samples.[22][edit] Other typesOther types of kidney stones are composed of struvite (magnesium, ammonium and phosphate); calcium phosphate; and cystine.Struvite stones are also known as infection stones, urease or triple-phosphate stones. About 10-15% of urinary calculi consist of struvite stones.[23] The formation of struvite stones is associated with the presence of urea-splitting bacteria,[24] most commonly Proteus mirabilis (but also Klebsiella, Serratia, Providencia species). These organisms are capable of splitting urea into ammonia, decreasing the acidity of the urine and resulting in favorable conditions for the formation of struvite stones. Struvite stones are always associated with urinary tract infections.The formation of calcium phosphate stones is associated with conditions such as hyperparathyroidism and renal tubular acidosis.Formation of cystine stones is uniquely associated with people suffering from cystinuria, who accumulate cystine in their urine. Cystinuria can be caused by Fanconi's syndrome.Urolithiasis has also been noted to occur in the setting of therapeutic drug use, with crystals of drug forming within the renal tract in some patients currently being treated with Indinavir, Sulfadiazine or Triamterene."
What is a calcium solid found in the kidney called?
A kidney stone. There are different types of kidney stones. The exact cause depends on the type of stone.Calcium stones are most common. They occur more often in men than in women, and usually appear between ages 20 - 30. They are likely to come back. Calcium can combine with other substances, such as oxalate (the most common substance), phosphate, or carbonate to form the stone. Oxalate is present in certain foods. Diseases of the small intestine increase the risk of forming calcium oxalate stones.
Is acetic acid present in spinach?
No. Acetic acid is vinegar. One acid in spinach is oxalic acid, which can form kidney stones (calcium oxalate) in susceptible individuals.
