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Ask QuestionPosted by Dgf Chd 5 years, 2 months ago
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Posted by Dgf Chd 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
The factors which influence the adsorption of a gas on a solid are as given below:
(1) Nature of the gas
(2) Nature of adsorbent
(3) Specific area of adsorbent
(4) Effect of temperature
(5) Effect of pressure
(6) Activation of adsorbent
Posted by Dgf Chd 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
When a solution of magnesium salts is combined with alkaline water it instigates precipitation of solid magnesium hydroxide. The reaction is as follows:
Mg2+ + 2 OH− → Mg(OH)2
Commercially it is produced by treating lime and seawater. Approximately one ton of magnesium hydroxide is obtained from 600 m3 of seawater. Calcium hydroxide is more soluble in magnesium hydroxide therefore Mg(OH)2 precipitates as a solid. The reaction is as follows:
MgO + H2O → Mg(OH)2
Posted by Himanshu Singh 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
A colligative property is a property of a solution that is dependent on the ratio between the total number of solute particles (in the solution) to the total number of solvent particles. Colligative properties are not dependent on the chemical nature of the solution’s components. Thus, colligative properties can be linked to several quantities that express the concentration of a solution, such as molarity, normality, and molality. The four colligative properties that can be exhibited by a solution are:
- Boiling point elevation
- Freezing point depression
- Relative lowering of vapour pressure
- Osmotic pressure
Posted by Shraddha ✨✰✰ 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
BrF3 will consist of seven electrons in its outermost shell. After the bond formation, it will further have 2 lone pair and 3 Br—F covalent bonds. As the hybridization value or the electron pair is equal to 5 it gives rise to sp3d hybrid orbitals.
Posted by Dgf Chd 5 years, 2 months ago
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Tarush Raj Tiwari 5 years, 2 months ago
Meghna Thapar 5 years, 2 months ago
When a solution of acetic acid in water is shaken with charcoal, a part of the acid is adsorbed by the charcoal and the concentration of the acid decreases in the solution. Similarly, the litmus solution when shaken with charcoal becomes colourless.
Posted by Anchal Gupta 5 years, 2 months ago
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Yangzee Sherpa 5 years, 2 months ago
Posted by Himanshi Tripathi 5 years, 2 months ago
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Aman Mishra 5 years, 2 months ago
Posted by Kanika Uniyal 5 years, 2 months ago
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Tanya ?? 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
Solids can very easily be distinguished from liquids by their definite shape, considerable mechanical strength, and rigidity. There are many different types of solids. Some are soft and others are hard. Some are rigid and others are flexible. The atoms and molecules of solids are held together by pulling forces called bonds.
The atoms in solids are held together by interatomic forces. The average location of the atoms in a lattice does not change with time. Since the atoms are almost lacking in mobility, their kinetic energy is negligibly small. It is this lack of mobility which makes a solid rigid.
Posted by Mishti ???? 5 years, 2 months ago
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Mohsin Raza 5 years, 2 months ago
Posted by Shubham Patil 5 years, 2 months ago
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Aryanika A 5 years, 2 months ago
Posted by Ujjval Pareek 5 years, 2 months ago
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Prerna Dhankhar 5 years, 2 months ago
Posted by Himanshi Tripathi 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
somerism in Coordination Compounds
Isomerism is the phenomenon in which compounds have same molecular formula but different structures and these different structures are called as isomers. Isomers are those that have different physical and chemical properties.
There are two types of isomers:
- Structural isomerism
- Stereoisomerism
Structural isomerism: Different types are as follows:-
- ionization isomerism
- Hydrate isomerism
- Coordination isomerism
- Linkage isomerism
Stereoisomerism: Different types are as follows:-
- geometrical isomerism
- Optical isomerism
Structural isomerism:The compounds have same molecular phenomenon but different structures
- Ionization isomerism: they differ in productions of ions in aqueous solution
For example:à [CoBr(NH3)5]SO4 and [Co (NH3)5SO4 ]Br are ionization isomers when dissolved in water
[CoBr(NH3)5]SO4 à[CoBr(NH3)5]2+ + SO42-
[Co (NH3)5SO4 ]Bràà[CoSO4 (NH3)5]2+ + Br-
- Hydrate or solvate isomerism: in this they differ in number of molecules of water of crystallization
For example: [Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2H2Oare hydrate isomers
When dissolved in water
[Cr(H2O)6]Cl3à[Cr(H2O)6] + 3Cl- (no water molecule )
[Cr(H2O)5Cl]Cl2H2Oà[Cr(H2O)5Cl]+2Cl+H2O(will give one water molecule )
- Coordination isomerism: they differ in coordination entities
For example:[Co(NH3)6] [Cr(CN)6] and :[Co(CN)6] [Cr(NH3)6] are coordination isomers
- Linkage isomerism: it is in case of ambidentate ligands and in this they differ in the point of attachment.
For example, in case of CN(cyano) and in case of NC (isocyano)
- Stereoisomerism: in these compounds have same molecular formula but differ in spatial arrangements of ligands.
It is of two types:
- Geometrical isomerism
- Optical isomerism
Geometrical isomerism: it is due to difference in the geometrical arrangements of ligands around central metal atom.
it is of further two types :
- Cis
- Trans
Cis : when the similar ligands are on adjacent position
Trans : when the similar ligands are on opposite positions
Cis and trans isomers are shown below (this is shown by compounds with coordination number 4 and 6
Example: [Pt (NH3)4Cl2]
Posted by Sanjana Kushwaha 5 years, 2 months ago
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Posted by Ambarin Nishat Ali 5 years, 2 months ago
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Prerna Dhankhar 5 years, 2 months ago
Tanya ?? 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
Solid: Solid is a state of matter in which the constituting particles are arranged very closely.The constituent particles can be atoms, molecules or ions.
Properties of solids:
- They have definite mass, volume and shape.
- They are compressible and rigid.
- Intermolecular distances are very short and hence the intermolecular forces are strong.
- Their constituent particles have fixed position. sand can only oscillate about their mean positions.
Posted by Himanshi Tripathi 5 years, 2 months ago
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Mishti ???? 5 years, 2 months ago
Posted by Swdwmsri Daimary 5 years, 2 months ago
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Mandeep Singh 5 years, 2 months ago
Posted by Preet Kaur 5 years, 2 months ago
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Manya Tyagi 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
Write the IUPAC names of the following coordination compounds:
(i) [Cr(NH3)4(H2O)2]Cl3
A n s w e r :
The IUPAC names of the given compound is as follows:
(i) tetraamminediaquachromium ( III ) chloride
Posted by Shubhanshu Tiwari 5 years, 2 months ago
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Posted by Shubhanshu Tiwari 5 years, 2 months ago
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Posted by Eman Ansari 5 years, 2 months ago
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Bhavya Sachdeva 5 years, 2 months ago
Posted by Prakash Singh Bora 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Raoult’s law states that a solvent’s partial vapour pressure in a solution (or mixture) is equal or identical to the vapour pressure of the pure solvent multiplied by its mole fraction in the solution.
Mathematically, Raoult’s law equation is written as;
Psolution = ΧsolventP0solvent
Where,
Psolution = vapour pressure of the solution
Χsolvent = mole fraction of the solvent
P0solvent = vapour pressure of the pure solvent
Posted by Yatendra Pratap Shishodia 5 years, 2 months ago
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Unnati Dwivedi 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
Biomolecules are the most essential organic molecules, which are involved in the maintenance and metabolic processes of living organisms. These non-living molecules are the actual foot-soldiers of the battle of sustenance of life. They range from small molecules such as primary and secondary metabolites and hormones to large macromolecules like proteins, nucleic acids, carbohydrates, lipids etc.
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Puspa Patail 5 years, 2 months ago
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