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Ask QuestionPosted by Eshwar Gowdar Eshwar Gowdar 5 years, 5 months ago
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Posted by Pranav Verma 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
Coagulation or Flocculation Value : -The minimum of an electrolyte ( in millimoles ) that must be added to one litre of a colloidal solution leads to bring about the complete coagulation is called coagulation or Flocculation Value .
Posted by Ayush Vishwakarma?? 5 years, 5 months ago
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Ayush Vishwakarma?? 5 years, 5 months ago
Mishti ???? 5 years, 5 months ago
Ayush Vishwakarma?? 5 years, 5 months ago
Posted by Richa Singh 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Weight of CO(NO3)2.6H2O = 30 g
Volume of solution = 4.3 L
we know that molar mass of Co(NO3)2.6H2O = 291 g / mol
Molarity = Number of moles / Volume of solution
Hence, the number of moles of solute = given weight/molar mass = 30/291= 0.103 mol
Molarity = 0.103/ 4.3 = 0.023M
Therefore, molarity of 30 g of CO(NO3)2.6H2O in 4.3 L of solution is 0.023M
Posted by Abhay Raj Singh 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
A solution is a homogeneous mixture of two or more substances. A solution has a solvent and a solute as its components. The component of the solution that dissolves the other component in it (usually the component present in larger amount) is called the solvent. The component of the solution that is dissolved in the solvent (usually present in lesser quantity) is called the solute.
Posted by Bhagwat Prasad Tiwari 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
I guess in hyperconjuagation basically we talk about interactions of sigma bond with empty or partially filled p- orbital ,so if we remember that diagram in which no +charge was appearing at meta positions. so how can d interactions ll be possible if no positive charge ll appear on meta position,in case of +H type hyperconjuagation.
Posted by Kanchan Singh 5 years, 5 months ago
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Mishti ???? 5 years, 5 months ago
Dev Raj 5 years, 5 months ago
Posted by Pranav Verma 5 years, 5 months ago
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Khushi....? ??? 5 years, 5 months ago
Posted by Shubham Patil 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
When soap molecule are present in water the molecules arrange themselves in the form of culster in such a manner that their hydrophobic ends are away from the water molecules and their hydrophillic or ionic end are towards the water molecules.
This is known as micelle formation and the cluster that is formed is called as micelle.
micelle system behaves as a true solution in low concentration and as colloidal solution as high concentration.
Posted by Akhila Katroth 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
The cell is
and
and n = 2
∴
As K is very high, the reaction is favoured in the forward direction, so, Sn2+ can easily reduce Fe3+ ion to Fe2+ ion.
Posted by समर्थ सिंह ठाकुर 5 years, 5 months ago
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Posted by Saleha Hakim 5 years, 5 months ago
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Khushi....? ??? 5 years, 5 months ago
Posted by Neeraj Kumar 5 years, 5 months ago
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Posted by Rajesh Mane 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
Kohlrausch law of independent migration of ions
- The Kohlrausch law of independent migration of ions states that limiting molar conductivity of an electrolyte can be represented as the sum of the individual contributions of the anion and cation of the electrolyte.
- Limiting equivalent molar conductivity of an electrolyte is the algebraic sum of limiting molar equivalent conductivities of its constituent ions.
- Mathematically,
Where λo+ = limiting equivalent conductivities of cation
λo- = limiting equivalent conductivities of anion.
Gaurav Seth 5 years, 5 months ago
Kohlrausch’s law of independent migration of ions states molar conductivity of an electrolyte at infinite dilution can be expressed as the sum of the contribution of individual ions. If molar conductivity of cations and anions are represented by λ∞+ and λ∞– respectively.
where v+ and v– are number of cations and anions per formula of electrolyte e.g.,
Λ∞ CaCl2 = λ∞ (Ca2+) + 2 λ∞ (CI–)
Λ = KCl = λ∞ (K+) + λ∞ (CI–)
Uses 1. It is used to find molar conductivity of weak electrolyte at infinite dilution which
cannot be obtained by extrapolation.
2. It is used to calculate degree of dissociation of weak electrolyte at a particular concentration.
Degree of dissociation
where Λem is molar conductivity of weak electrolyte at a particular concentration and Λemis molar conductivity of weak electrolyte at infinite dilution.
Posted by Himanshu Arya 5 years, 5 months ago
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Posted by Best Friends 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
Chemisorption is irreversible process while physical adsorption is reversible in nature.
Chemisorption<i> </i>is an adsorption where the forces involved are valence forces of the same kind as those operating in the formation of chemical compounds. Thus, chemisorption leads to formation of the so called a "surface compound". The process is irreversible. Efforts to free the adsorbed gas give some definite compound.
Physisorption is adsorption in which the forces involved are intermolecular forces (van der Waals forces) of the same kind as those responsible for the imperfection of real gases and the condensation of vapours. The process is reversible, i.e., desorption of the gas occurs by increasing the temperature or decreasing the pressure.
Posted by Sneh Yadav 5 years, 5 months ago
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Hemant Tiwari 5 years, 5 months ago
Posted by Brite Iqoo 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
Pottasium permanganate (K2MnO4) is prepared from pyrdusite ore (MnO2). The finely powdered pyrolusite ore (MnO2) is fused with an alkali metal hydroxide like KOH in the presence of air an oxidizing agent like KNO3 to give that dark green pottasium manganate (K2MnO4). Pottasium manganate dispropartionate in a neutral / acidic medium to give KMnO4.
Posted by Brite Iqoo 5 years, 5 months ago
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Posted by Jatin Sharma 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
germicide is a substance or agent that kills germs, especially pathogenic microorganisms; a disinfectant.
Example :
Cationic detergents: Cationic detergents are quarternary ammonium salts of mine with acetates, chlorides or bromides as anions. Cationic parts possess a long hydrocarbon chain and a positive charge on nitrogen atom. Cationic detergents are termed so because a large part of molecule is a cation. Since they possess germicidal properties, they are used as germicides. They has strong germicidal action, but are expensive.
Posted by Ayush Vishwakarma?? 5 years, 5 months ago
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Gurjant Singh 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
Halo alkanes are the compounds containing halogen atom attached to the sp3 hybridized carbon atom of an alkyl group.
Haloarenes are the compounds containing halogen atom attached to sp2 hybridized carbon atom of an aryl group.
Khushi....? ??? 5 years, 5 months ago
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Ishaan Koolwal 5 years, 5 months ago
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Devil ? 5 years, 5 months ago
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