Messages posted by keepsmiling

Knowing the electron gain enthalpy values for O

→ O– and O → O2– as –141–1 respectively, how can you account for the formation of a2– species and not O–?Hint: Consider lattice energy factor in the formation of compounds).

and 702 kJ mol

large number of oxides having O

(

Can PCl

5 act as an oxidising as well as a reducing agent? Justify.

plz someone help

plz somone help

Amongst the following, the most stable complex is

(i) [Fe(H

2O)6]3+ (ii) [Fe(NH3)6]3+ (iii) [Fe(C2O4)3]3– (iv) [FeCl6]3–
9.32

visible region for the following:

[Ni(NO

What will be the correct order for the wavelengths of absorption in the2)6]4–, [Ni(NH3)6]2+, [Ni(H2O)6]2+ ?

FeSO

4 solution mixed with (NH4)2SO4 solution in 1:1 molar ratio gives the2+ ion but CuSO4 solution mixed with aqueous ammonia in 1:42+ ion. Explain why?

test of Fe

molar ratio does not give the test of Cu

smart and better than before

boring

8.00000000000000000001

to a future world 2050

NCERT IS GOOD

attention experts kindly reply

answer rest questions also

Give plausible explanation for each of the following:

(i) Cyclohexanone forms cyanohydrin in good yield but 2,2,6-trimethylcyclohexanone

does not.

(ii) There are two –NH

2 groups in semicarbazide. However, only one is involved

12.19

The molecular mass of the compound is 86. It does not reduce Tollens’ reagent

but forms an addition compound with sodium hydrogensulphite and give positive

iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write

the possible structure of the compound.

An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen.
12.20

carboxylate ion, carboxylic acid is a stronger acid than phenol. Why?

Although phenoxide ion has more number of resonating structures than

in the formation of semicarbazones.

(iii) During the preparation of esters from a carboxylic acid and an alcohol in

the presence of an acid catalyst, the water or the ester should be removed

as soon as it is formed.

SO SEND IT

Q1 Give plausible explanation for each of the following:

(i) Cyclohexanone forms cyanohydrin in good yield but 2,2,6-trimethylcyclohexanone

does not.

(ii) There are two –NH

2 groups in semicarbazide. However, only one is involved

The molecular mass of the compound is 86. It does not reduce Tollens’ reagent

but forms an addition compound with sodium hydrogensulphite and give positive

iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write

the possible structure of the compound.

Q2An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen.
Q3

carboxylate ion, carboxylic acid is a stronger acid than phenol. Why?

Although phenoxide ion has more number of resonating structures than

in the formation of semicarbazones.

(iii) During the preparation of esters from a carboxylic acid and an alcohol in

the presence of an acid catalyst, the water or the ester should be removed

as soon as it is formed.

RD IS THE BEST

THAT GUY WAS APJ ABDULKALAM

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