What is Efflorescent and examples?

What is Efflorescent and examples?

Efflorescence is the property of some substance to lose wholly, or partly their water of crystallization when their crystals are exposed to dry air even for a short time. Examples are : Washing soda, Glauber’s salt, Epsom salt.

What is efflorescence example?

In chemistry, an example of efflorescence is when a gypsum is exposed to a dry environment it will lose its water by evaporation and form a solid crust, anhydrite, on the surface. Word origin: Latin efflorescere (to bloom, blossom).

What is an example of Efflorescent salt?

An example of an efflorescent substance is the common copper (II) sulfate crystal \[CuS{O_4}. 5{H_2}O\], a blue crystalline solid that when exposed to air, slowly loses water of crystallization from its surface to crystallize to form a white layer of anhydrous copper (II) sulfate. \[N{a_2}C{O_3}.

What are Efflorescent salts give two examples?

The original water is released to the gas phase. 2]Gypsum (CaSO4. 2H2O) is a hydrate solid that, in a sufficiently dry environment, will give up its water to the gas phase and form anhydrite (CaSO4). 3]Copper(II) sulfate (bluestone) (CuSO4.

What is Efflorescent compound?

An efflorescent substance is a chemical which has water associated with its molecules, and which, when exposed to air, loses this water through evaporation. A common example of this phenomenon is the drying of cement.

What is the definition of Efflorescent?

efflorescence • \ef-luh-RESS-unss\ • noun. 1 a : the action or process of developing and unfolding as if coming into flower b : an instance of such development c : fullness of manifestation : culmination 2 : the period or state of flowering 3 : the process or product of efflorescing chemically.

What is efflorescence give an example for Efflorescent substance?

When a precipitation occurs directly on the surface, it is termed efflorescence. One of the most common examples of efflorescent substances is Copper sulphate pentahydrate or blue vitriol (CuSO4. 5H2O).

What is Efflorescent powder?

(ef-lōr-es’ĕnt), Denoting a crystalline body that gradually changes to a powder by losing its water of crystallization on exposure to a dry atmosphere.

Which of the following is an example of a Efflorescent substance?

Is washing soda an Efflorescent substance?

washing soda, sodium carbonate decahydrate, efflorescent crystals used for washing, especially textiles. It is a compound of sodium (q.v.).

What is the meaning of Efflorescent?

What is a pharmaceutical powder?

A pharmaceutical powder is defined as a dry, solid substance, composed of finely divided drugs with or without excipients and intended for internal or external use. In general, powders are more stable than liquid dosage forms and are rapidly soluble, enabling the drug to be absorbed quickly.

Which is an example of an efflorescent compound?

Efflorescent, Deliquescent, Hygroscopic Compounds. This phenomenon is referred to as efflorescence while the salt is said to be efflorescent. A perfect example of a compound that undergoes efflorescence is washing soda where its molecules lose nine out of its ten molecules of water of crystallization when it is exposed to the open air.

When does the efflorescence of a hydrate occur?

Efflorescence occurs when the aqueous vapor pressure of the hydrate is greater than the partial pressure of the water vapor in the air. Efflorescent substances include most hydrated salts.

How are efflorescence, deliquescent and hygroscopic compounds used in chemistry?

Efflorescence, deliquescent and hygroscopic compounds are terminologies used in chemistry to describe the chemical changes that occur in a compound during a chemical reaction due to its lose or gain of moisture or water of crystallization when exposed to the air in their surroundings.

What kind of vapour pressure causes efflorescence?

Efflorescence. Hydrated cupric sulfate, or blue vitriol (CuSO 4 ·5H 2 O), the aqueous vapour pressure of which is lower, undergoes efflorescence only if the air in contact with it is relatively dry. deliquescence.

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