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Magnesium phosphate is an ionic compound made up of the magnesium cation (Mg2+) and the phosphate anion (PO43-). This is a crystalline salt with a hydrated structure. The water of crystallisation is discovered in the crystal structure of magnesium phosphate when it is hydrated. It can also be found in amorphous forms. The chemical formula for magnesium phosphate is Mg3(PO4)2, and the molecular weight of magnesium phosphate is 262.855 g/mol.
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Key Takeaways: Magnesium Phosphate, Water, Hydrochloric acid, Reaction
Types of Magnesium Phosphate
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Magnesium Phosphate is available in a number of different forms. The names of the various types of magnesium phosphate along with their chemical formulae, are given below:
- Trimagnesium – Mg3O8P2
- Monomagnesium – H4MgO8P2
- Dimagnesium – HMgO4P
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Magnesium Phosphate Detailed Video Explanation:
Characteristics of Magnesium Phosphate
The characteristics of magnesium phosphate are summarised in the table below.
| Odour | Odourless |
|---|---|
| Colour | White |
| Appearance | Crystalline powder |
| pH | 6 to 9.5 |
| Molecular weight | 262.855 g/mol |
| Density | 2.195 g/ml at 298k |
| Melting point | 1457K |
| Boiling point | 158?C |
| Covalently bonded unit | 5 |
| Complexity | 36.8 |
| Solubility | Soluble in sodium chloride NaCl |
Reaction of Magnesium Phosphate
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Water-based treatment H2O
When magnesium phosphate reacts with water, phosphoric acid and magnesium hydroxide are formed. The chemical formula is as follows:
Mg3(PO4)2 + H2O → H3PO4 + Mg(OH)2
HCl (hydrochloric acid) treatment
Magnesium Phosphate is converted to magnesium chloride and phosphoric acid when it is treated with hydrochloric acid. The chemical formula for the same are listed below.
Mg3(PO4)2 + HCl → MgCl2 + H3PO4
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Properties of Magnesium Phosphate
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Given below are the various physical and chemical properties of magnesium phosphate:
Physical Properties of Magnesium Phosphate
- It is odourless
- It is a white crystalline powder
- Its covalently bonded unit is 5
- Its complexity is 36.8
- Its pH is 6-9.5
- It is soluble in salt
Chemical Properties of Magnesium Phosphate
- When magnesium phosphate is combined with water, it produces phosphoric acid and magnesium hydroxide. The chemical formula is shown below.
Mg3(PO4)2 + H2O → H3PO4 + Mg(OH)2
- Phosphoric acid and magnesium chloride are formed when magnesium phosphate combines with hydrochloric acid.
Mg3(PO4)2 + HCl → MgCl2 + H3PO4
Importance of Magnesium Phosphate in Human Health
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Magnesium is a mineral that serves a variety of roles in the human body, including:
- It aids in the maintenance of energy and the reduction of weariness.
- Magnesium phosphate aids with the development and maintenance of bones and teeth.
- It helps to keep neurons, muscle, and cell membranes healthy.
- Magnesium phosphate aids proper muscular function, especially that of the heart.
- It aids in the production of protein.
- It can aid in the equilibrium of the body's other mineral and hormone systems.
- Magnesium is easily obtained from a well-balanced diet. However, some people may not be able to obtain or absorb all of the magnesium they require. Correcting a magnesium deficit may assist to alleviate tiredness and exhaustion, improve nerve and muscle function, and promote bone and tooth health. One dose contains 99.4 milligrammes of active magnesium.
- Magnesium in high doses can cause constipation. Unless prescribed by a doctor, it is best to stay under 400mg per day.
Negative Consequences of Magnesium Phosphate
Magnesium phosphate should be taken in doses of less than 350mg. If a person's consumption of magnesium phosphate increases, it can lead to serious negative effects or even death. The following are a few of them.
- Nausea can cause fatigue, vomiting, and a headache.
- Constipation and diarrhoea are symptoms of an upset stomach.
- Blood pressure that is too low
- Confusion in the mind
- Heartbeats that aren't regular
- breathing difficulties
- Coma and, in certain circumstances, death are possible outcomes.
Points to Remember
- The phosphorus content of one cup of chicken is 330 grammes.
- Dark chocolates are high in magnesium, thus they can be beneficial to your health.
- Magnesium oxide is created when magnesium wire is burned in the presence of air or oxygen, producing white light. Fireworks, flares, photographic flashbulbs, and pyrotechnics all employ this feature.
- Magnesium phosphate serves to control hormonal activities and maintains the balance of other minerals in the body.
- Magnesium phosphate is used as a food supplement in the form of magnesium phosphate powder capsules, which must be consumed daily.
- Magnesium is a rare metal that makes up only 2% of the earth's crust.
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Sample Questions
Ques 1. What are the most common magnesium phosphate sources? (2 marks)
Ans. Magnesium is abundant in legumes, avocados, almonds, pumpkin, and a variety of fatty fishes such as salmon, mackerel, and others. Phosphorus can also be obtained through chicken, pork, pumpkin, dairy products, cuttlefish, crab, and other seafood.
Ques 2. Do you know if magnesium phosphate is a naturally occurring substance? What causes magnesium phosphate to form? (3 marks)
Ans. Phosphorus and magnesium are abundant in nature. Magnesium phosphate, on the other hand, is formed by heating both minerals.
Magnesium phosphate cements are made by combining magnesium oxide with water-soluble phosphates such as ammonium dihydrogen phosphate (ADP), which solidifies at room temperature due to the production of hydrated phases.
Ques 3. Differentiate between phosphate, phosphorous, and phosphoric. (2 marks)
Ans. Phosphorus is a mineral that is required for animal and plant life. Phosphate is a naturally occurring mineral compound that contains phosphorus. Phosphoric acid, on the other hand, is an inorganic acid that is primarily employed in the production of phosphates.
Ques 4. What is the purpose of magnesium phosphate? (2 marks)
Ans. Vitamin E insufficiency is treated with magnesium phosphate. Magnesium phosphate serves to control hormonal activities and maintains the balance of other minerals in the body. Magnesium phosphate is used as a food supplement in the form of magnesium phosphate powder capsules, which must be consumed daily.
Ques 5. Name the types of magnesium phosphate and their formulas. (3 marks)
Ans. The different types of magnesium phosphate are:
- Trimagnesium – Mg3O8P2
- Monomagnesium – H4MgO8P2
- Dimagnesium – HMgO4P
Ques 6. Give the following details: (4 marks)
1)Molecular weight
2)Density
3)Melting point
4)Boiling point
Ans. The following are:
- Molecular weight - 262.855 g/mol
- Density - 2.195 g/ml at 298k
- Melting point - 1457k
- Boiling point - 158ºC
Ques 7. Give the reaction of magnesium phosphate with water and hydrochloric acid. (4 marks)
Ans. The reaction of magnesium phosphate with water and hydrochloric acid are:
Water-based treatment H?O
When magnesium phosphate reacts with water, phosphoric acid and magnesium hydroxide are formed. The chemical formula is as follows:
Mg3(PO4)2 + H2O → H3PO4 + Mg(OH)2
HCl (hydrochloric acid) treatment
Magnesium Phosphate is converted to magnesium chloride and phosphoric acid when it is treated with hydrochloric acid. The chemical formula for the same are listed below.
Mg3(PO4)2 + HCl → MgCl2 + H3PO
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