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A hydrated salt has a number of waters of hydration combined to each molecule of salt whereas an anhydrous salt is one that has had its waters of hydration removed. An example of a hydrated salt is nickel sulfate hexahydrate, NiSO4·6H2O. The waters of hydration can be removed by a simple heating, resulting in NiSO4(s) + 6H2O(g).
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What is anhydrous or anhydrous?
anhydrous means if a substance contains NO water it is anhydrous. but if it is hydrated it contains water.
Why certain hydrated salts have color but anhydrous form has no color?
The color in certain hydrated salts arises from the presence of water molecules, which can influence the electronic structure of the metal ions they coordinate with. These water molecules can create specific ligand fields that affect the energy levels of the d-orbitals, allowing for the absorption of visible light and resulting in color. In contrast, the anhydrous form lacks these water molecules, leading to a different electronic environment and typically resulting in a lack of color. Thus, the hydration state plays a crucial role in determining the optical properties of these compounds.
How are hydrated substances usually obtained?
Hydrated substances are formed by water absorption in the anhydrous substance.
Why are common salts called hydrated salts?
Only some salts have hydrates, not all. These salts contain in the formula water of crystallization.
How do you determine the no of moles of water if strength of hydrated and anhydrous samples of oxalic acid is given?
2
How are anhydrous salts prepared?
Anhydrous salts prepared by evaporating the water contained in a hydrated salt. However, anhydrous salts are non-electrolytes, meaning they can't pass an electric current.
When do hydrated salts appear?
When an anhydrous salt retain water in the crystalline structure.
How can anhydrous salt changes into their hydrated salt?
On heating, hydrated salts lose their water of crystallization and as a result, the crystals lose their shape and colour and change to a powdery substance.
How many moles are in 7.6 grams of Epsom salts MgSO4?
Depends on if it is hydrated or not. If hydrated, magnesium sulfate heptahydrate, then (7.6g)/(246.47g/mole)=.0308mole. If anhydrous (7.6g)/(120.415g/mole)=0.063mole.
Why are anhydrous salts hard to store?
Anhydrous salts are hard to store because they readily absorb water from the atmosphere, forming hydrated salts. This can change their properties, such as solubility and reactivity, making them less predictable in reactions. Proper storage in airtight containers with desiccants is necessary to prevent moisture absorption.
Why is it wrong to leave a bottle of anhydrous sodium sulfate or calcium chloride open?
The hydrated forms of these compounds are lower energy thermodynamically than the anhydrous forms. It takes heat energy to drive the water out of these salts to make them anhydrous. If left in the open, the anhydrous forms will take up water from the atmosphere and re-hydrate themselves. This process releases heat energy, so it "runs downhill" energy-wise.
What is anhydrous or anhydrous?
anhydrous means if a substance contains NO water it is anhydrous. but if it is hydrated it contains water.
Are there anhydrous salts in your body?
In the body salts are dissolved in water, blood etc.
Why certain hydrated salts have color but anhydrous form has no color?
The color in certain hydrated salts arises from the presence of water molecules, which can influence the electronic structure of the metal ions they coordinate with. These water molecules can create specific ligand fields that affect the energy levels of the d-orbitals, allowing for the absorption of visible light and resulting in color. In contrast, the anhydrous form lacks these water molecules, leading to a different electronic environment and typically resulting in a lack of color. Thus, the hydration state plays a crucial role in determining the optical properties of these compounds.
How are hydrated substances usually obtained?
Hydrated substances are formed by water absorption in the anhydrous substance.
What happens to a colour of a solute molecules when the solvent evaporates or boils?
The color of an anhydrous compound is sometimes different from the hydrated compound.
How is anhydrous sodium carbonate converted to pure hydrated sodium carbonate?
Anhydrous sodium carbonate can be converted to hydrated sodium carbonate by simply adding water. When anhydrous sodium carbonate reacts with water, it forms hydrated sodium carbonate through a hydration reaction where water molecules are incorporated into the crystal structure, resulting in a hydrated form of the compound.
