How is basicity order determined?

According to "Lewis acid base concept base are those substance which can donate lone pair or can accept H+ ions" Basicity order of base determined on the basis of lp donation power of base. 

For example amine are  the  base due to the presence of lone pair on nitrogen atom.

Order of basicity of amines are as follow:

                                      3°>2°>1° (gaseous state only)

3° amines are more basic due to high density of electron on nitrogen atom hence it can easily donate lp to the acid or H+

For more details click the link given below:

What is relative basic strength order 1° amines , 2°amines and 3° amines ? Explain:

Related Questions:

1. What is relative basic strength order 1° amines , 2°amines and 3° amines ? 
2. Explain:Arrange the following in the increasing order of their acid strength : Methyl amine, Dimethyl amine, Aniline, N-methyl aniline (I.I.T, 1988).
3. What is Carbylamine test or Isocyanide test ?
4. What is Hinsberg's reagent and where Hinsberg's test use?
5. Can we prepare aniline by Gabriel – phthalimide reaction?
6. N-Ethyl-N-methyl propanamine does not show optical activity why?
7. What is relative basic strength order 1° amines , 2°amines and 3° amines ? Explain:
8. Amines are more basic than ammonia why?
9. Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
10. Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
11. What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
12. Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
13. Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
14. What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
15. Why pyridine is more basic than Pyrrole?
16. Why pyrimidine is less basic than pyridine?
17. Imidazole is more basic than pyridine? Why?
18. Biological Important of Imidazole and structure:
19. Pyridine is almost 1 million times less basic than piperidine? Why?
20. Cyclohexylamine amine is the stronger base than Aniline? Why?
21. Tetrahydroquinoline amine is the stronger base than Tetrahydroisoquinoline? Why?

22. N,N,2,6-Tetramethyl aniline is more basic than N,N-Dimethyl aniline.Why ?

23. Which amine is most basic in gas phase? (3° 2° Or 1°)

What is the fuction of Sodium nitroprusside as Drug ?

Nitroprusside belongs to a group of drugs called antihypertensives. It rapid acting vasodilator, active on both arteries and veins. Nitroprusside is also used to treat high blood pressure and congestive heart failure

Related Questions:

(1) What is the "molecular and structural" formula of "Nitroprusside"

(2) What is the common formula of “Prussian blue is” and “Turn bull's blue”?  

(3) What is denticity of NO and NO+ ligands ?

(4) Although both [Mn(H2O)6]2+ and [FeF6]3- have a d5 configuration and high-spin complexes. But the dilute solutions of Mn2+ and Fe +3 complexes are therefore colorless. Why?

(5) Which of the Complex of the following pairs has the highest value of CFSE?

(6) Colour of Complexes due to charge transfer:

(7) Why violet colour of [Ti(H2O)6]Cl3 disapear (colourless) on heating heating ? 

(8) Why [Ni(CN)4]-2 is colourless while [Ni(H2O)4]-2 although both have +2 oxidation state and 3d*8 configuration ?

(9) Why [FeF6]3– is colourless whereas [CoF6]3– is coloured ? 

(10) Why Fe(CO)5 is colourless while Fe(bipy)(CO)3 is intensely purple in colour ?

(11) Why all the tetrahedral Complexes are high spin Complexes ?

 

 

What is the "molecular and structural" formula of "Nitroprusside"

Nitroprusside is  Pentacyanonitrosylferrate(2-) ion ([Fe(H₂O)₅(NO)]⁺² ) and its famous salt is Disodium pentacyanonitrosylferrate(2-) dihydrate, (Na₂[Fe(H₂O)₅(NO)] ) . It is a hypotensive agent whose structural formula is given as:

 

Related Questions:

(1) What is the "molecular and structural" formula of "Nitroprusside"

(2) What is the common formula of “Prussian blue is” and “Turn bull's blue”?  

(3) What is denticity of NO and NO+ ligands ?

(4)  Although both [Mn(H2O)6]2+ and [FeF6]3- have a d5 configuration and high-spin complexes. But the dilute solutions of Mn2+ and Fe +3 complexes are therefore colorless. Why?

(5) Which of the Complex of the following pairs has the highest value of CFSE?

(6) Colour of Complexes due to charge transfer:

(7) Why violet colour of [Ti(H2O)6]Cl3 disapear (colourless) on heating heating ? 

(8) Why [Ni(CN)4]-2 is colourless while [Ni(H2O)4]-2 although both have +2 oxidation state and 3d*8 configuration ?

(9) Why [FeF6]3– is colourless whereas [CoF6]3– is coloured ? 

(10) Why Fe(CO)5 is colourless while Fe(bipy)(CO)3 is intensely purple in colour ?

(11) Why all the tetrahedral Complexes are high spin Complexes ?

What is the common formula of “Prussian blue is” and “Turn bull's blue”?

 Prussian blue is a dark blue pigment, the another name of Prussian blue is Berlin blue or Paris blue. It is formed by oxidation of ferrous ferrocyanide salts with FeCl₃.

Colour of Prussian blue and turnbull’s blue is originated by charge transfer when electronic transition occurs from one part of the Complex to other part i.e such type are also called internal redox reaction (Charge transfer from metal  to metal). Intensity of clour in such type transition is very high as they do not require follow any selection rule.

      4FeCl₃​+3K₄​[Fe(CN)₆​]→Fe₄​[Fe(CN)₆​]₃​+12KCl
                                  OR  “Prussian blue is” or “Turn bull's blue”
       FeCl₃​+K₄​[Fe(CN)₆​]→KFe[Fe(CN)₆​]+3KCl

                                  OR
       FeSO₄​+K₃​[Fe(CN)₆​]→KFe[Fe(CN)₆​]+K₂​SO₄​
                                            “Turn bull's blue”

Related Question:

Although both [Mn(H2O)6]2+ and [FeF6]3- have a d5 configuration and high-spin complexes. But the dilute solutions of Mn2+ and Fe +3 complexes are therefore colorless. Why?

Which of the Complex of the following pairs has the highest value of CFSE?
Colour of Complexes due to charge transfer:
Why violet colour of [Ti(H2O)6]Cl3 disapear (colourless) on heating heating ? 
Why [Ni(CN)4]-2 is colourless while [Ni(H2O)4]-2 although both have +2 oxidation state and 3d*8 configuration ?
Why [FeF6]3– is colourless whereas [CoF6]3– is coloured ? 
Why Fe(CO)5 is colourless while Fe(bipy)(CO)3 is intensely purple in colour ?
Why all the tetrahedral Complexes are high spin Complexes ?

 

Why Cis-But-2-ene posseses dipole moment while Trans-But-2-ene have zero dipole moment ?

  We know that But -2- ene It exists in two forms Cis-But-2-ene and Trans-But-2-ene

                      

SOLUTION: The Trans isomer is symmetrical with the 2-methyl groups in anti position. So the bond dipoles the two Me– C bonds acting in opposition cancel each other and result in a zero dipole. Where as in cis isomer the dipoles do not cancel each other resulting in a net dipole

 

Related Question

 

What is "Pouling Equation" and How to calculate % ionic character of covalent bond ?:

What is" Haney and Smith Scale" and How to use calculation of % ionic character of covalent bond ?

How to calculate the & ionic character in H-X bond of Halogen acids.Given that electronegativity of H ,F, Cl, Br. and I are 2.1, 4.0, 3.0, 2.8,and 2.5 respectively.

What is "Pouling Equation" and How to calculate % ionic character of covalent bond ?

Calculate the % of ionic character of a bond having length is 0.83 Å and 1.82 D as its observed dipole moment ?

Calculate the % of ionic character of a bond having length 0.92 Å and 1.91 D as its observed dipole moment ?.

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