211. H2O2 is both acidic as well as basic.....
4. inert pair effect....
9. electron gain enthalpies of noble gases are positive.
1.Is H2O2 acidic or basic..why ?
2.Are all salts of Lithium (Li) insoluble in H2O ?
3.Are all salts of Alkali metals (Na,K,Rb,Cs) soluble in H2O ?
4.Is the stability of +1 oxidation state (group 13) in the order B<Al<Ga<In<Tl ? Why ?
5.What is a mordant ( eg: Butter of Tin : SnCl2.5H2O ) ?
6.Does Nitrogen (N) show any kind of catenation ?
7.Is the order of catenation tendency in Group 15 N>P>As>Sb>Bi ?
8.How can Nitrogen (N) show +5 oxidation state when a LOT OF ENERGY is required to remove the 5 electrons ? ( One compound where N shows +5 oxidation state is N2O5 )
9.Are electron gain enthalpies of Noble gases 0 or +ve ?
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8 Answers
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397. Nitrogen has no vacant d-orbitals. It catenates but not as easily as phosphorus. So technically that honour should go to P. Tendency to catenate decreases down the group.
P > N > As > Sb > Bi though I'm not sure...haven't revised p-block.
8. That must be the average oxidation state. Or you may be referring to the solid state of N2O5, which exists technically as nitronium nitrate.
9. See, electron gain enthalpy and electron affinity are two different quantities if you were confused about them. They're related, in that
-(EGE) = EA
Electron gain enthalpy of noble gases is +ve, so EA is -ve meaning they have no affinity for electrons.
6. Yes, though weaker than carbon. An example is N2.
1. H2O2 is an amphoteric oxide...looked this up.
392. Bhai how are lithium salts insoluble in water at all?? Isn't lithium cation supposed to have high hydration enthalpy? I think all of them are soluble in water..
1pritish is rite i also thnk that all of them are soluble in water.. same reason me too as mentioned in JD Lee.
solubility decreases while descending a group.
but execptions are fluorides and hydroxides for whom solubility increases descending a group as for fluorides and hydroxides lattice energy decreases more rapidly than hydration energy which is reverse in case of others.
More over for solubility Hydration energy > Lattice Energy ( should be greater )
1) for this i scanned through JD lee and found H2O2 is a dibasic acid.
11.H2O2 is acidic as it turns blue litmus red. 2. LiNO3 is soluble. 8.Well, N2O5 is actually NO2+NO3-
1H2o2 can act as weak acid or a weak base too
its nature depends upon the type of reaction it is involved in....
as that judge how its bond r breaken upon.....:)