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3 years ago

Why benzene is called aromatic compound according to Huckel’s rule?

Chemistry

1 answer:

scoundrel [369]3 years ago

6 0

Answer:

It obeys rule

Explanation:

Benzene is an aromatic hydrocarbon because it obeys Hückel's rule.

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What is the concentration of OH− and pOH in a 0.00072 M solution of Ba(OH)2 at 25 ∘C? Assume complete dissociation.

Mumz [18]

Given :

0.00072 M solution of $Ba(OH)_2$ at $25^oC$ .

To Find :

The concentration of $OH^-$ and pOH .

Solution :

1 mole of $Ba(OH)_2$ gives 2 moles of $OH^-$ ions .

So , 0.00072 M mole of $Ba(OH)_2$ gives :

$[OH^-]=2 \times 0.00072\ M$

$[OH^-]=0.00144\ M$

$[OH^-]=1.44\times 10^{-3}\ M$

Now , pOH is given by :

$pOH=-log[OH^-]\\\\pOH=-log[1.44\times 10^{-3}]\\\\pOH=2.84$

Hence , this is the required solution .

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3 years ago

Complete the table below by filling in the principal quantum number n and angular momentum quantum number l for each electron su

Alja [10]

Answer:

For 4f the principal quantum number, n is 4 and the angular momentum quantum number l is 3

7s: n = 7 and l = 0

4p: n = 4 and l = 1

7p: n = 7 and l = 1

Explanation:

The principal quantum number gives the energy level of the electron in an atom. It shows the shells in which an electron is in an atom.

if n = 1, 2, 3, 4...; it corresponds to K, L, M, N... shells in an atom

The numerical coefficient of the subshell gives the pricipal quantum number.

for instance in 4f, the principal quantum number, n is 4 because 4 is the coefficient.

The angular momentum quantum number, l gives the energy sublevel or subshell.

Angular momentum quantum number has integral values, l = 0, 1, 2, 3... which correspond to s, p, d, f,.. orbitals.

Thus for 4f the principal quantum number, n is 4 and the angular momentum quantum number l is 3

similarly, for 7s: n = 7 and l = 0

4p: n = 4 and l = 1

7p: n = 7 and l = 0

using similar approach for others

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3 years ago

16. Mass = 10g

inessss [21]

Actual volume=Final Volume-initial volume

$\\ \sf\longmapsto 50ml-30ml=20ml$

Now

$\\ \sf\longmapsto Density=\dfrac{Mass}{Volume}$

$\\ \sf\longmapsto Density=\dfrac{10}{20}$

$\\ \sf\longmapsto Density=2g/ml$

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3 years ago

g An analytical chemist is titrating of a solution of diethylamine with a solution of . The of diethylamine is . Calculate the p

Serga [27]

Answer:

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Explanation:

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3 years ago

Can you identify an atom without knowing numbers of neutrons in it?

Masja [62]

Answer:

Explanation:

We cannot identify an atom without knowing numbers of protons in the atom.

The number of neutrons is the amount of neutrally charged particles in an atom. These subatomic particles occupy the dense nucleus with the protons.

To determine an atom, we use their atomic numbers.
Atomic number is the number of protons in an atom.
Protons are the positively charged particles in the atom.
The periodic table of elements is arranged by the atomic number of an element.

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3 years ago

Why benzene is called aromatic compound according to Huckel’s rule?​

Why benzene is called aromatic compound according to Huckel’s rule?