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Haloalkanes have higher boiling points than their corresponding alkanes as haloalkane molecules are connected to each other by dipole interactions that are relatively stronger than the London forces between alkane molecules

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What is standard hydrogen electrode

Posted by R.Sasi Kumar 2 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Akshay Haldua 2 years, 2 months ago

It is E°cell

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Anjan Karthi 2 years, 2 months ago

An instrument used to determine the standard reduction potentials of other elements and complexes. It is made up of a platinum metal rod (which adsorbs and thereby, holds H molecules on its surface) dipped in acidified water. For this hydrogen is assumed to be of Eo = 0. When connected to material whose Eo has to be found out. Then, the Eo is found out by equation Eo (cell) = Eo (cathode) - Eo (anode). Eo (cell) is found experimentally and if hydrogen electrode undergoes oxidation, it is anode and if it undergoes reduction, it is cathode.

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Y S 2 years, 3 months ago

Represented by Eo

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Give me some ideas for my chemistry project

Posted by Kashish Aggarwal 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Aseem Mahajan 2 years, 3 months ago

<font face ="Times New Roman">What project?

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What is the oxidation state of No2

Posted by Shubham Gupta 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Priyanshu Tiwari 2 years, 3 months ago

Gupta

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Reimer - Tiemann Reaction

Posted by R.Sasi Kumar 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Anjan Karthi 2 years, 2 months ago

Phenol, on reaction with chloroform and sodium hydroxide, gives Salycaldehyde.

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Experiment 3 protein fat carbohydrates test

Posted by Anjali Patel 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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What is different between adsorption and absorption

Posted by Haha Jsis 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Why is the mass determined bu measuring a colligative property in case of some solutes are abnormal ? Disscuss it with the help Van't Hoff law

Posted by Hatnu Haokip 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Anjan Karthi 2 years, 2 months ago

Some times, the solute molecules, on dissolving in the solution, may undergo association or dissociation resulting in a net change in the quantity of solute particles in the solution. This can affect the value of colligative properties and thereby, the values of molar masses too. This is called ABNORMAL MOLAR MASS.

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Questions related to haloalkanes

Posted by Esther Murmu 2 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Divya. Kumari 2 years, 3 months ago

Ya!! Asked

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What halogen

Posted by Suryansh Shukla 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Y S 2 years, 3 months ago

Halogens are 17th group elements of periodic table that are cl f Br I ...

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Why electrophilic substitution in benzoic acid takes place at meta position

Posted by Akansha Rana 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Anjan Karthi 2 years, 2 months ago

During resonance stabilisation, the ortho and para positions of the benzene ring with respect to the carboxy group attains momentary positive charges. Thus, the meta position is RELATIVELY favourable for incoming electrophilic substitutions in benzoic acid.

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Boiling point of water at 750 mm HD is 99.63 degree Celsius how much is to be added to 500 G of water such it that it boils at 100 degree Celsius

Posted by Pratimanandann Aryansingh 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Application of kohlrausch law

Posted by Divya Thakur 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Ayush Singh 2 years, 3 months ago

1: It is used in the calculation of absolute ionic mobilities. 2: It is used in the Molar conductance of weak electrolyte at infinite dilution. 3: It is used in the calculation of degree of dissociation (alpha) of a weak electrolyte. Thank you 😊

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A compound form hcp structure. What is the total number of voids in 0.4 mol of it? How many of these are tetrahedral voids.

Posted by Sowjanya Gowda 2 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Ayush Singh 2 years, 3 months ago

Or 7.23 × 10²³.

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Ayush Singh 2 years, 3 months ago

Number of atoms in 0.4 mole of compound = 0.4 x 6.022 x 10²³ = 2.4088 x 10²³ Number of octahedral voids = Number of atoms in close packing = 2.4088 x 10²³ Number of terahedral voids = 2 x No. of atoms in close packing = 2 x 2.4088 x 10²³ = 4.8176 x 10²³ Total number of voids = 2.4088 x 10²³ + 4.8176 x 10²³ = 7.2264 x 10²³. Thank you 😊

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what are ambident nucleophiles ? explain with an example

Posted by Ganesa Tawar 2 years, 3 months ago

CBSE > Class 12 > Chemistry

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Lakshmi Ramesh 2 years, 3 months ago

Single Nucleophile which have two nucleophlic centre are called ambident Nucleophile. NCS -AND SCN-. In this sulphur or nitrogen will be the nuclophilic centre

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Chapter 10 haloalkanes and haloarenes Intex question 10.1

Posted by Ankita Jangid 2 years, 4 months ago

CBSE > Class 12 > Chemistry

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Wagisha Singh 2 years, 1 month ago

10.1 Write structures of the following compounds: (i) 2-Chloro-3-methylpentane (ii) 1-Chloro-4-ethylcydohexane (iii) 4-tert. Butyl-3-iodoheptane (iv) 1,4-Dibromobut-2-ene (v) 1-Bromo-4-sec. butyl-2-methylbenzene. Ans:

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Distinguish between the meaning of adsorption and absorption. Give one example of each

Posted by Muskan Jangde 2 years, 4 months ago

CBSE > Class 12 > Chemistry

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Determine the equilibrium constant of the following reaction at 298 K: 2Fe3+ + Sn²+ 2Fe2+ + Sn4+ (Given: Esn4+/Sn²+= 0.15 volt; EFe3+/Fe2+ 0.771 volt).

Posted by Ritumoni Borgohain 2 years, 4 months ago

CBSE > Class 12 > Chemistry

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Vapour pressure of pure water at 298k is 23.8mm hg. 50gm of urea (NH2CONH2) is dissolved in 850g of water.calculate the vapour pressure of water for this solution and it's relative lowering.

Posted by Amisha Rajahansa 2 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Ritumoni Borgohain 2 years, 4 months ago

Vapour pressure of water,P1=23.8 m of hg The weight of water=850 g The weight of Urea=50 g The molecular weight of water(H_2O)=1×2+16=18 g mol−1 molecular weight of urea (NH2CONH2)=2N+4H+C+O=2×14+4×1+12+16=60 g mol−1 Use formula number of moles=molar massmass number of moles of water n1=18850=47.22 number of moles of urea n2=6050=0.83 Now, we have to calculate the vapour pressure of water in the solution. we take vapour pressure as P1. Use the formula of Raoult's law P10P10−P1=n1+n2n2 plug the values we get 23.823.8−P1=47.22+0.830.83 23.823.8−P1=0.0173 23.8−P1=23.8×0.0173 P1=23.4 m Hg Vapour Pressure of water in the given solution=23.4 mm of Hg Relative lowering=0.0173

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What is meant by stability of a coordination compound in solution? State the factors which govern stability of complexes.

Posted by Himanshu Sharma 2 years, 4 months ago

CBSE > Class 12 > Chemistry

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Ritumoni Borgohain 2 years, 4 months ago

The stability of coordination compounds in solution means the degree of association between the metal ion and the ligands involved in the state of equilibrium. Quantitatively, the stability is expressed by the equilibrium constant for the association. Factors affecting the stability of a complex ion: (a) The nature of the central metal atom (1) Charge on the central metal ion (2) Size of metal ion (3) Electronegativity or charge distribution of metal ion (4) Chelate effect (5) Macrocylic effect (b) The nature of the ligand (1) Basic strength (2) Size and charge of ligands

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Ritumoni Borgohain 2 years, 4 months ago

Use app Login Class 12 >>Chemistry >>Coordination Compounds >>Stability of Coordination Compounds >>What is meant by stability of a coordina Question What is meant by stability of a coordination compound in solution? State the factors which govern stability of complexes. Hard Open in App Solution Verified by Toppr The stability of coordination compounds in solution means the degree of association between the metal ion and the ligands involved in the state of equilibrium. Quantitatively, the stability is expressed by the equilibrium constant for the association. Factors affecting the stability of a complex ion: (a) The nature of the central metal atom (1) Charge on the central metal ion (2) Size of metal ion (3) Electronegativity or charge distribution of metal ion (4) Chelate effect (5) Macrocylic effect (b) The nature of the ligand (1) Basic strength (2) Size and charge of ligands

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composition of N2O5 dissolve in carbon tetrachloride at the 303 K the following results were obtained: Time 0;40;80;120;160; infinite Volume of O2 collect (cc) 0;15.6;28.6;38.6;48.6;84.6 Show that the rxn is first order .Also cal. The rate constant.

Posted by Rupinder Kaur 2 years, 4 months ago

CBSE > Class 12 > Chemistry