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  • 2 answers

Anjani Kumar 7 years ago

But fluorine applies the strongest -I effect and as we know that acidic strength is directly proportional to -I, so according to this para fluorophenol must be the most acidic one. But the answer is parachlorophenol. Help.

Yogita Ingle 7 years ago

The acidic strength of phenols is affected by the presence of substituents on the ring.
An electron-withdrawing group increases the acidic strength by greater dispersal of the negative charge on the phenoxide ion by inductive effect (-I) or by resonance (-R) effect.
An electron-donating group decreases the acidic strength due to (+I) or (+R) or both.
Halogens have +R and -I effects, but the -I effect is more dominant.
Therefore, all halophenols are more acidic(except p-fluorophenol) than phenol itself.
 

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Boric acid
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Aman Kumar 7 years ago

B2NO3+ 6H2....may be wrong...?
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Riya Sharma 7 years ago

Those elements in which last electron enter in p -orbital.

Aman Kumar 7 years ago

P-block elements are those elements which are basically belongs to group 13 to 18....

Abhishek Kumar 7 years ago

P block element are those element which has electronshell 2 in their outermost shell
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Aman Kumar 7 years ago

-I effect......hope it helps

Rahul Singh 7 years ago

Yes
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Isha Chandra 7 years ago

Buffer soln is an aqueous solution consisting a weak acid and its conjugate base or vice versa
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Lily ☺ 7 years ago

As lead is more stable in +2 oxidation state .
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(P - a n2/ v2)(v - nb) = nRt
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Isha Chandra 7 years ago

Due to back bonding
BF3 ->. Trigonal planar( b.a. -120°) BF4– -> tetrahedral (b.a.-109.5°) Due to reduce in bond angle , bond pair Repulsion increase so, bond length is less in BF4–.
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Isha Chandra 7 years ago

Two or more elements having same no. of neutrons

Sanjay Rawat 7 years ago

Two or more species of atoms or nuclei that have the same no. Of neutrons
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Sanjay Rawat 7 years ago

Defined as the difference b/w enthalpy and product of temperature and entropy
a thermodynamic quantity equal to the enthalpy (of a system or process) minus the product of the entropy and the absolute temperature.
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Sanjay Rawat 7 years ago

It states that pairing of e- in an orbital of a particular subshell (s,p,d,f) doesn't take part until all the orbital of subshell are singly occupied

Nancy Rajput 7 years ago

Hund’s rule states that electron pairing in p, d and f orbitals cannot occur until each orbital of a given subshell contains one electron each or is singly occupied. Hence it accounts for the maximum number of unpaired electron and thus maximum electron spin (electron spin is ½ for each single electron).For eg oxygen has configuration 1s^2 , 2s^2 , 2p^4 therefore in p subshell firstly each orbital will b filled n thn the pairing first 2p orbital will start
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Aman Kumar 7 years ago

Kp=kc(RT)^∆n
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Yogita Ingle 7 years ago

White phosphorus is made up of discrete P4 tetrahedra which are subjected to very high angular strain as the angles is 60 degrees.

Red phosphorus is a polymer of P4 tetrahedra, which has much less angular strain.

This high angular strain makes white phosphorus unstable and highly reactive.

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Shreya Dixit 7 years ago

3 spherical nodes because according to the formula Node =principal no.(n). -1
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Riya Sharma 7 years ago

Given mass ➗ molecular mass = volume ➗ 22.4 (litre) 17.15 /35 =volume /22.4 (litre) 17.15 *22.4 / 35 =volume volume = 10.976
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Isha Chandra 7 years ago

Forward rekn means formation of products while backward means the formation of reactant

Sagar Pandya 7 years ago

It represents a reversible process where forward is for product and backward is for reactant

Mp? Mp? 7 years ago

What means towards the product and backwards means towards the reactant side
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Sahil Yadav 7 years ago

chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time. The chemical equilibrium is achieved when the rate of forward reaction is same as the reverse reaction

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