Select Board & Class
show how so2 bleaching temporary but cl2 bleach permanently?
how to find the bond order in NO2- and NO3- . pls explain.
Kindly explain this that why they disproportionate in acidic medium.
"All oxidation states from +1 to + 4 of nitrogen tend to disproportionate in acid solution."
why nitrogen exist as a gas and phosphorus exist a solid?
write the reaction of SO2 with acidified KMnO4 and write the product formed.
show the structures of XX3, XX5 and XX7- bent T shape, sq pyramidal, pentagonal bipyramidal
What are p-pi - p-pi , p-pi - d-pi and d-pi - d-pi bonds??
The relative stabilities of N2, N2+ and N2- are
1. N2> N2+=N2-
2. N2= N2+>N2-
3. N2< N2+=N2-
4. N2= N2+<N2-
NCl3 and PCl3 gives different product on hydrolysis. why?
Why does ICl is more reactive than I2?
Why is NO paramagnetic in gaseous state but diamagnetic in solid and liquid state?
why so2 can act as both oxidizing as well as reducing agent?
How to balance the chemical equation:
NaOH (hot and conc.) + Cl2 -------> NaCl + NaClO3+H2O
Ka2 is very less than Ka1 for H2SO4 in water..y?
what is covalecy? what is covalency of n2o5
Electron gain enthalpy of oxygen is less than sulphur's due to its compact nature (it will suffer interelectronic repulsion), but why does EGE become less negative after sulphur ? (Down the group, atomic size increases, so how can size be attributed to EGE in this case?) if it is not size, then what is the deciding factor?
why does iron dissolve in HCL to form FeCl2 and not FeCl3
h3po3 is diprotic acid
Trihalides of Nitrogen are lewis bases
Trihalides of P , Sb , As , Bi are lewis acids?
Explain the trend :
i)NF3 < NCl3 < NBr3 < NI3 ..in accordance with Lewis Base Strength
ii) PF3 > PCl3 > PBr3 > PI3 ...in accordance with the Lewis Acid Strength
why is NH3 is a stronger base than PH3
iodine forms I3 but flourine does not form F3
Why out of all the noble gases, only Xenon can form compounds?
(The answer is not because its 1st IE is similar to that of oxygen)
Why ionic radius of Sb (76pm) and Bi (103pm) less than other elements of the group?
My Chemistry practicals and Viva are on 4/2/13 and 5/2/13.Please provide some help on how to prepare for them because they are also very important.
what is meant by reducing character and oxidising character? what is oxidising agent and reducing agent?
oxygen does not form OF4 or OF6 whereas S forms SF4, SF6. why ?
the N-O bond in NO2- is shorter than the N-O bond NO3-. State the reason.
why is helium used in diving apparatus?
Fluorine and chlorine reacts with water but bromine and iodine are sparingly soluble in water .., what is the reason for such behaviour??
Nitrogen does not form pentahalides due to non-availability of thed-orbitals in its valence shell plz explain
NCl3 get hydrolysed whereas NF3 not
Why are 2nd and 3rd ionisation enthalpies of Bismuth more than that of Antimony?
NF3 IS AN EXOTHERMIC COMPOUND WHEREAS NCl3 IS NOT WHY???
nh3 is good complexing agent
SF6 is not easily hydrolysed whereas SF4 is easily hydrolysed...why...???
Why does reducing property of dioxide decreases from SO2 to TeO2 and SO2 is reducing while TeO2 is an oxidisng agent.
what is holmes signal
Br2 + F2 (excess) is ...............
PH3 has lower boiling point than NH3.explain.
The perhalate ion with maximum oxidising power is
d. all have nearly same oxidising power
why aniline does not under go friedel crafts rxn????
why do noble gas form compounds with oxygen and flourine only?
why pcl5 is more covalent then pcl3 ?
the oxide in higher oxidation state of the element is more acidic than that of lower oxidation state,, why?????
Why is BiH3 the strongest reducing agent amongst all the hydrides of group 15 elements?
why are pentahalides more covalent than trihalides?
what is the order of melting and boiling points of group 15 elements.explain it with reasoning
why does acidic character decrease down the group?
what is p pie p pie and d pie p pie bond?
as the ratio between radii of X & Y increases,number of atoms per molecule also increases.why?? here, Y is a halogen of smaller size and X is a halogen of larger size!
hw 2 determine the basicity of-H3PO3 and H3PO4
Explain the trend
NCl3> PCl3 > AsCl3 > SbCl3 > BiCl3..on the account of d hydrolysis..
thkyu for ny help..!! :))
Why iodine is more soluble in potassium iodide than in water?
All the bonds in SF4 are not equivalent. Why ?
Give Electronic configration of S2+, S4+, S6+ .
F2 is stronger oxidizing agent than cl2
What does this mean, ws written in uses of hydogen chloride..
for extracting glue from bones and purifying bone black..!!
H3PO2 and H3PO3 act as good reducing agents while H3PO4 does not.
structure of H2S2O3 ,H2S2O4, H2S2O5, H2S2O6, H2S3O6, H2S4O6, H2S506
why is H2S is less acidic than H2Te?
what i meant by ppi ppi ' dpi dpi and dpi ppi bond....???pls xplain
why SF6 exists but OF6 does not?
The ionisation enthalpy of group 15 elements is much greater than group 14 elements in corresponding periods.Give reason................. its is said that that ionisation enthalpy dercrase down the group thn how is it increasing in period..???
why nitrogen has more ionistaion enthalpy than oxygen???
Copyright © 2021 Aakash EduTech Pvt. Ltd. All rights reserved.
E.g: 9876543210, 01112345678
We will give you a call shortly, Thank You
Office hours: 9:00 am to 9:00 pm IST (7 days a week)