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What happen when PCl5 is heated?

Posted by Gurwinder Singh 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Dhanishta Gosrani 8 years ago

PCl5---- PCl3+ Cl2

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What are barbiturates?

Posted by Priyanka Choudhary 8 years ago

CBSE > Class 12 > Chemistry

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zwitter ion structure?

Posted by Vinay Singh 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Priyanka Choudhary 8 years ago

Amino acid are usually colorless, crystalline solids. These are water soluble, high melting solids and behave like salts rather than simple amines or carboxylic acids. This behaviour is due to the presence of both acidic (carboxylic group) and basic (amino group) group in the same molecule. In aqueous solution, the carboxylic group can lose a proton and amino group can accept a proton, giving rise to a dipolar ion known as zwiyter ion.

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A potential difference of 20 volts applied to the ends of a column of M/10 AgNO3 solution 4cm in diameter and 12cm in length gave a current of 0.20 ampere. Calculate the specific and molar conductivities of tje solution.

Posted by Neha Ghanghas 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Aabha Pandey 4 years, 6 months ago

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A cell with N/50 KCl solution showed a resistance of 550 ohms at 25O degree C. The specific conductivity of N/50 KCl at 25degree C is 0.002768 1/ohm 1/cm .The cell filled with N/10 ZnSO4 solution at 25 degree C shows a resistance of 72.18 ohms. Find the cell constant and molar conductivity of ZnSO4 solution.

Posted by Neha Ghanghas 8 years ago

CBSE > Class 12 > Chemistry

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The rate of change of concentration bof D at a particular moment in the reaction A+2B gives 3C+D was found to be 0.4molL-1s-1. Calculate the rate of reaction ,rates of disappearance of A and B and tge rate of appearance of C at the given moment.

Posted by Somesh Kumar 8 years ago

CBSE > Class 12 > Chemistry

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What are the collagtate form

Posted by Vivek Kumar 8 years ago

CBSE > Class 12 > Chemistry

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Sand mayer reaction

Posted by Killer Suhail 8 years ago

CBSE > Class 12 > Chemistry

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D/b sn1 & sn2

Posted by Vasu Devan 8 years ago

CBSE > Class 12 > Chemistry

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Pls explain the t2g and eg of chapter coordination chemistry

Posted by Shailja Shukla 8 years ago

CBSE > Class 12 > Chemistry

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Basicity of hydrides of nitrogen family

Posted by Deol Benra 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Zainab Khan 8 years ago

decrease down the group

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Draw the warner representation of (Pt (H2O)4Cl2)Br2

Posted by Sahil Singh 8 years ago

CBSE > Class 12 > Chemistry

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Express the relation between conductivity and molar conductivity of solution

Posted by Adarsh Kashyap 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Amit Dayma 8 years ago

Molar Conductivity =k(Conductivity) ×1000/C (conc.in molarity)

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Rohit Bisht 8 years ago

M.C= c×1000/V

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What is recemisation

Posted by Tejashva Gupta 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Aanchal Gupta 8 years ago

Mixture of a pair of enantiomers which cancel the effect of eachother is recamic mixture n process is racemisation

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Rohit Bisht 8 years ago

A mixture of two enantiomers is process is knon ass recimerization

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What is optical activity

Posted by Tejashva Gupta 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Varun Banda 8 years ago

Optical activity is the ability of a chiral molecule to rotate the plane of plane-polairsed light, measured using a polarimeter. A simple polarimeter consists of a light source, polarising lens, sample tube and analysing lens.

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1.Zero order reaction? 2. First order reaction?

Posted by Lalit Chaudhari 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Varun Banda 8 years ago

A reaction is said to be of zero order if its rate is independent of the concentration of the reactants, i.e., the rate is proportional to the zeroth power of the concentration of the reactants.

For the reaction A → products to be of zero order,

Rate=- \frac{d[A]}{dt} = k[A]^0

First Order Reaction When the rate of the reaction depends on the first power of the reactant concentration in the rate equation, then the reaction is said to follow first order kinetics. The change in the concentration of only one reactant will affect the rate of the reaction.

For example consider the reaction :

A+B→productsA+B→products

For the first order reaction : Rate of the reaction = k[A]

Therate of the reaction depends on the concentration of only A. Change in concentration of B is not going to affect the rate of the reaction. The rate of the reaction is zero order with respect to B.

Therate of the reaction can otherwise also be written as :

Rate of the reaction = k[A][B]o

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Are the cross linked polymers high density or low density polythenes??

Posted by Sanket Sarkar 8 years ago

CBSE > Class 12 > Chemistry