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Equivalent weight is Molecular weight / Z Z is a number whose value depends on the chemical context of reaction For salts: Z is the oxidation or valence state of the ion. Al2(SO4)3 : molecular weight of Al2(SO4)3 : 2 X 27 + 3 X 32 + 2X 16 =342 for Al2(SO4)3, Z=6 because 2Al+3 is equivalent to 6 moles of H+. valence of Al2(SO4)3: 6 equivalent weight of Al2(SO4)3 : 342 / 6 = 57

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structure of hexaaminecobalt(III)sulphate

Posted by Dha Rani 6 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Dha Rani 6 years, 9 months ago

(co(NH3)6)2(SO4)3

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Anisotropic

Posted by Chhavi Meel 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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Priya # 6 years, 9 months ago

The physical properties differ in values with direction in the same crystal.Crystalline solids.

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I just passed class 11, how can i score 200+ in jee mains as you all must have gave this year

Posted by Shatayu Ganvir 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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Mahaalakshmi Vijayamoorthy 6 years, 9 months ago

In physics try HC Verma... Try the monthly magazines published by mtg for PCM... All the best...for ur boards and mains??

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Why does NO2 group show its effect only at orto and para and not ar meta postoin?

Posted by Vigneshwar S 6 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Yash Ojha 6 years, 9 months ago

Because it stablise negative charge only at ortho and para and not on meta position

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Harsh Dhote 6 years, 9 months ago

Beacause ortho and para are major part

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Are the practice papers of this app useful ? Can they help in fetching marks in boards ?

Posted by Abhinav Kumar 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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what is rdx

Posted by Abhishek Yadav 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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What are co-enzymes?

Posted by Ayush Gupta 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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Yogita Ingle 6 years, 9 months ago

A coenzyme is an organic non-protein compound that binds with an enzyme to catalyze a reaction. Coenzymes are often broadly called cofactors, but they are chemically different. A coenzyme cannot function alone, but can be reused several times when paired with an enzyme.

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What is Hunds Law.

Posted by Govind Kumar 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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Yogita Ingle 6 years, 9 months ago

Hund’s rule

According to this rule, the electrons are filled in the degenerate orbitals of the same subshell.
Electron pairing in p, d and f orbitals cannot be done until each sub-shell is occupied singly.
This is because electrons are the same in charge and they repel each other. This repulsion is minimized if two electrons move away from each other by acquiring different degenerate orbitals.
All the orbitals which are singly occupied have parallel spins which can be either clockwise or anticlockwise.
If the electrons have parallel spin then there will be less inter-electronic repulsions and high spin multiplicity.
So in order to maximize spin multiplicity, the pairing of electrons in a sub-shell does not take place until each sub-shell is singly occupied.

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Bhor's model cloud explain the atomic spectrum of hydrogen.

Posted by Govind Kumar 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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A solution containing 1.9 gram per 100ml of KCL is isotonic with a solution containing 3 gram per 100ml of urea calculate the degree of dissociation of KCL solution assume that both the solutions have same temperature

Posted by Dehuti Baheti 6 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Anchal Yadav 6 years, 9 months ago

I don't understand paper to ho gya chemistry ka then why you guys are asking questions of chemistry

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Compare henry law and raoults law

Posted by Akanksha Kapkoti 6 years, 9 months ago

CBSE > Class 12 > Chemistry

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Gaurav Seth 6 years, 9 months ago

Henry's law can be stated as :
The partial pressure of a gas in vapour phase (p) is directly proportional to the mole fraction (x) of the gas in the solution at a fixed temperature.
Expressing solubility in terms of mole fraction of the gas in the solution, for a gas A and the partial pressure as p , Henry's law can be written as :
p_A = K_H x_A_,where K_His called Henry's constant.

Raoult's Law can be stated as :
For a solution of volatile liquids, the vapour pressure of a component at a given temperature is directly proportional to its mole fraction .

p₁ = p₁⁰x₁ , where p₁⁰is the vapour pressure of pure component 1 at the same temperature.

Similarities between Raoult's law And Henry's law:
(i)Both apply to the volatile component of the solution.
(ii) Both state that the vapour pressure of any component in the solution is proportional to the mole fraction of that component in the solution.

Dissimilarities :
The two laws differ in the proportionality constant. In Raoult's law it is equal to vapour pressure of the pure component(p⁰) while in Henry's law it is equal to an experimentally determined value of Henry's constant.