Chemistry

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New answer posted

8 months ago

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V
Vishal Baghel

Contributor-Level 10

An atomic orbital is characterized by n , l  and m.

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N
Nishtha Datta

Beginner-Level 5

Xenon has 8 valence electrons. In XeF2 , it forms two bonds with fluorine, leaving three lone pairs. The steric number =2 bonds +3 lone pairs =5 .
As per the VSEPR Theory  the electron? pair geometry due to SN = 5 will be trigonal bipyramidal. The hybridization type will be sp3d hybridisation. However, the three lone pairs occupy equatorial positions, resulting in a linear molecular geometry.

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A
alok kumar singh

Contributor-Level 10

Total 3 streo- isomers

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A
alok kumar singh

Contributor-Level 10

Mole of polyhydric alcohol =  1 . 8 4 * 1 0 3 9 2 = 2 . 0 * 1 0 5 m o l e .

Mole of H2 gas produced = 1 . 3 4 4 2 2 4 0 0 = 6 . 0 * 1 0 5 m o l e .  

No of -OH gp present =  6 . 0 * 1 0 5 2 . 0 * 1 0 5 = 3

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A
alok kumar singh

Contributor-Level 10

Only H2S2O8 has per-oxo bond.

 

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A
alok kumar singh

Contributor-Level 10

Oxidation state of Co = 3

And co-ordination No = 6

Sum = 3 + 6 = 9

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A
alok kumar singh

Contributor-Level 10

λ t = l n N o N t

0 . 6 9 3 t 1 / 2 * t = l n 1 N t

 Or  0.693*10030=ln1Nt

  1 N t = 1 0

N t = 1 1 0 = 0 . 1              

Or Nt = 1 * 10-1   μ g

New answer posted

8 months ago

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A
alok kumar singh

Contributor-Level 10

Cu(s) Cu++ + 2e- (Oxidn at cathode)

2 A g + + 2 e 2 A g ( s ) C u ( s ) + 2 A g + 2 A g ( s ) + C u + + ( R e d n a t a n o d e )

Q = [ C u + + ] [ A g + ] 2 a n d n = 2

0.43 =   E c e l l o = 0 . 0 6 2 l o g ( 0 . 0 0 1 ) ( 0 . 0 1 ) 2

E c e l l o = 0 . 4 6

E c e l l o = E A g + / A g o E C u + + / C u o

0.46 = 0.80 - E c u + + / C u o

E c u + + / C u o = 0 . 3 4 V o l t = 3 4 * 1 0 2  

               

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8 months ago

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A
alok kumar singh

Contributor-Level 10

Δ T f = K f * m  

( 1 5 6 1 5 5 . 1 ) = 2 * 1 . 8 M W * 1 0 0 0 ( 6 2 . 5 * 0 . 8 )                

  0.9 =   2 * 1 . 8 * 1 0 0 0 M W * 5 0


M W = 8 0 g m / m o l      

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8 months ago

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A
alok kumar singh

Contributor-Level 10

Following have the sp3d2 hybridisation

 

 

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