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anigeo
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is it necessary that all crystalline solids are hydrated or hygroscopic.
could anyone explain me the case of NACl and NA2CO3.10H2O?
could anyone explain me the case of NACl and NA2CO3.10H2O?
Crystalline Nature: NACl & NA2CO3.10H2O Explained
- Thread starter anigeo
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In summary, not all crystalline solids are hydrated or hygroscopic. Some substances may contain crystalline water when crystallized from water solutions, but it does not mean every crystal contains water or is hygroscopic. For example, quartz is a crystalline solid that does not contain water and is not hygroscopic. In the case of Na2CO3, it may have been crystallized from water or in a wet environment, giving it a high affinity for water. However, it is still the same chemical and can be crystallized in anhydrous conditions, but it will still have its affinity for water and be considered a hygroscopic material.
- #2
jedishrfu
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could you be a little more description as to what you're investigating you know some context for your question?
- #3
Borek
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http://en.wikipedia.org/wiki/File:Quartz,_Tibet.jpg
No crystalline water, not hygroscopic.
Does it answer your question?
No crystalline water, not hygroscopic.
Does it answer your question?
- #4
anigeo
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is it so that Na2CO3.10H2O crystalline and Na2CO3 not?if not what it is.
- #5
Borek
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anigeo said:
Please elaborate, I don't understand your question.
Many substances will contain crystalline water when crystallized from water solutions, and it can be difficult to prepare their anhydrous crystals. In such cases it may mean anhydrous crystals will be very hygroscopic. It doesn't mean every crystal of every substance contains crystalline water and is hygroscopic, as is clearly shown by the quartz example.
- #6
AbedeuS
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Some chemicals just tend to have a high affinity to water. So in the case of your Na2CO3 it may well have been crystallized from water or in a wet environment and its affinity for water dictates that the lowest energy pathway to crystallization just so happens to include any nearby water molecules.
You could equally crystallize them in anhydrous conditions but the resulting anhydrous, crystalline, substance is still the same chemical and as such still has its affinity for water which makes it a hygroscopic material.
You could equally crystallize them in anhydrous conditions but the resulting anhydrous, crystalline, substance is still the same chemical and as such still has its affinity for water which makes it a hygroscopic material.
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anigeo
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Borek said:
thanks i just thought that anhydrous crystals can never be produced.
1. What is the chemical formula for sodium chloride (NaCl)?
The chemical formula for sodium chloride is NaCl, which means that it is composed of one sodium atom (Na) and one chlorine atom (Cl).
2. How does NaCl form crystals?
NaCl forms crystals through a process called ionic bonding. This occurs when the positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-) attract and bond together in a repeating pattern, forming a crystal structure.
3. What is the difference between NaCl and Na2CO3.10H2O?
NaCl (sodium chloride) is a simple ionic compound, while Na2CO3.10H2O (sodium carbonate decahydrate) is a hydrated compound. This means that sodium carbonate has 10 water molecules (H2O) attached to each molecule of sodium carbonate, giving it a more complex chemical formula.
4. How are NaCl and Na2CO3.10H2O used in daily life?
NaCl is commonly used as table salt for seasoning and preserving food. It is also used in the production of many household products such as soaps and detergents. Na2CO3.10H2O, also known as washing soda, is used in laundry detergents and water softeners.
5. Can NaCl and Na2CO3.10H2O be separated into their individual components?
Yes, NaCl and Na2CO3.10H2O can be separated into their individual components through different methods such as evaporation, filtration, or electrolysis. These methods take advantage of the different physical and chemical properties of the compounds to isolate them from each other.
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