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Why only alkene shows cis isomerism

Posted by Priyanka Dandapat 6 years, 11 months ago

2 answers

Ayushi Ayushi 6 years, 11 months ago

Cis-trans isomerism is common in alkenes because there is restricted rotation about double bonds. Explanation: For example, an alkene such as but-2-ene has two different groups on each alkene carbon. It can exist as E − Z isomers that differ in the positions of the substituents on the double-bonded atoms. The double bond prevents rotation about the C=C axis. So the molecule exists as two isomers, with substituents on the same side (cis) or on the opposite side (trans) of the double bond.

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Vinit Kumar 6 years, 11 months ago

Due to double bond formation and have one π bond and one sigma bond

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KAL(SO4)2.12H2O what is the oxidation state of S ? Plzz ,show complete process

Posted by Indrajeet Dm 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Lavanya ❤️? 6 years, 11 months ago

K => +1 Al => +3 O == -2 let x = oxidation number of S 1 +3 + 2x -16 = 0 2x - 12 = 0 2x = 12 x = + 6 Therefore, the oxidation numbers of S is +6

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Which is most radioactive alkali metal ?

Posted by Aanya Deep 6 years, 11 months ago

CBSE > Class 11 > Chemistry

6 answers

Annu Sheraya 6 years, 11 months ago

Francium Fr

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Nikhil Sharma 6 years, 11 months ago

Francium

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@@Ditya ®°@Thore????? 6 years, 11 months ago

FRANCIUM

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Akanksha Kumari? 6 years, 11 months ago

Francium

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Adwitha Nair???‍??‍? 6 years, 11 months ago

Francium

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Aanya Deep 6 years, 11 months ago

Francium?

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Dichromate ion in acidic medium reacts with ferrous ion to give ferric and chromic ion. Write the balanced chemical equation corresponding to the reaction.

Posted by Vyakhya Singh 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

How acetylene react with methyl alchol?

Posted by Manoj Singh 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

How many total structural isomerism are possible for the given molecular formula C7 h 16

Posted by Pulkit Sharma Bhardhawaj 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Prakhar Jadaun ? 6 years, 11 months ago

I think 8 .....

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What is the limitation of 2nd law of thermodynamics

Posted by Saksham Rastogi 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Arrange the following in increasing atomic size and decreasing ionisation enthalpy?? Ga, Al, B, Tl

Posted by Manish Mahto 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Aasta Chouhan 6 years, 11 months ago

B ,Ga,Al,Tl.

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Gaurav Seth 6 years, 11 months ago

Ionisation enthalpy of the group 13 elements is not regular. Here is the order of the first IE of these elements-

B > Tl > Ga > Al > In

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express the relation of solubility products and solubility of Ba(PO4)2

Posted by Snigdha Mohanty 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Lily ☺ 6 years, 11 months ago

Solubility= cube root of (solubility product÷4)

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Lily ☺ 6 years, 11 months ago

S= cube root of(ksp÷4)

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Cu dissolve in Hno3 but not in hcl explain

Posted by Deepak Mavai 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Prakhar Jadaun ? 6 years, 11 months ago

Nitric acid reacts with copper because of the nitrate ion. It is the nitrate ion that causes the copper to dissolve, not the H . There is no reaction between copper and HCl because neither H nor Cl is able to react with the metal.

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Calculate the volume occupied by 2 mole of N2 gas at pressure 380mm of Hg and temperature

Posted by Ayaan Ahmad 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is nitroso????????

Posted by Cute Princess 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Ankit Singh 6 years, 11 months ago

Nitroso refers to a functional group in organic chemistry which has the NO group attached to an organic moiety. As such, various nitroso groups can be categorized as C-nitroso compounds, S-nitroso compounds, N-nitroso compounds, and O-nitroso compounds.

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What is the hybridisation of central atom in H3O+,XeF2,XeF4

Posted by Prakriti Rao 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Lavanya ❤️? 6 years, 11 months ago

hybridization of XeF4 :sp3d2 hybridization of XeF2 :sp3d hybridization of H3O+ : sp3

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What is anti-markownikov's rules ?

Posted by Asif Masir 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Yogita Ingle 6 years, 11 months ago

The rule says that in every addition reaction across the unsymmetrical double bond , the negative part of addendum molecule goes to that carbon atom having greatest no. of HYDROGEN.

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Lavanya ❤️? 5 years, 8 months ago

anti markovnikov's rule means the hydrogen will be add to the carbon atom which has less number of hydrogen atom.

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Hoffman bromamide degradation rraction

Posted by Lokesh Chandra 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Which of the following is attracted towards nucleophilic substitution of hydroxyl ion? A) methyl acetate. B) acetonitrile. C) Dimethyl ether. D)acetamide.

Posted by Jayaasrii?? Jayaasrii 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Kya hai pLutiion

Posted by Domendra Kurre 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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What will be the number of moles of potassium permagnate that will be needed to react with one mole of sulphite ion in acidic solution?

Posted by Suyash Tripathi 6 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Nishita Tomar 6 years, 11 months ago

listen miss you have no right to say anything about anyone understand just becoz you have a frnd grup here you are not the most intelligent here so talk like this with your frnds okk..

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Nishita Tomar 6 years, 11 months ago

darshana it means you also copy answer from google

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Gaurav Seth 6 years, 11 months ago

2 KMnO4 + 5 H2SO3→ K2SO4 + 2 MnSO4 + 2 H2SO4 + 3 H2O

2 moles of KMnO4 react with 5 moles of sulphite ion in acidic solution.Thus, 2/5 moles of KMnO4 will react with 1 mole of sulphite ion.

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When 2 moles of c2h6 are completely burnt 3129g of heat is liberated calculate the heat of formation of c2h6 for co2 & h2o are -395&-286

Posted by Isha Jain 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

The heat of combustion of ch4 & c4h10 are -890KJ & 287.07kjmol*-1 respectively. Which of two has greater efficency as fuel per gram

Posted by Isha Jain 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Explain quantum number

Posted by Tushar Narang 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Annu Sheraya 6 years, 11 months ago

Gives information about electrons

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Lavanya ❤️? 6 years, 11 months ago

The quantum numbers can be defined as "the sets of numerical values which give acceptable solutions to the Schrödinger wave equation for the hydrogen atom"

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Write the ajumption of kinetic theory of gas

Posted by Raushan Kumar 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 6 years, 11 months ago

All gases are made up of molecules which are constantly and persistently moving in random directions.
The separation between the molecules is much greater than the size of molecules.
When a gas sample is kept in a container, the molecules of the sample do not exert any force on the walls of the container during the collision.
The time interval of collision between two molecules, and between a molecule and the wall is considered to be very small.
All the collisions between molecules and even between molecules and wall are considered to be elastic.
All the molecules in a certain gas sample obey Newton’s laws of motion.
If a gas sample is left for a sufficient time, it eventually comes to a steady state. The density of molecules and the distribution of molecules are independent of position, distance and time.

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Explain synthesis resin method for removing permanent hardness of water

Posted by Šïmmï Vërmä 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 6 years, 11 months ago

Synthetic resins method is a method used for removing permanent hardness of water. In this method ion exchange resins (RSO₃H) is changed to RNa by treating it with NaCl. Then, RNa exchanges Na⁺ ions with Ca²⁺ and Mg²⁺ ions present in hard water and as a result, hard water is softened.
2RNa (s) + Mg²⁺(aq) → R₂M(s) + 2 Na⁺(aq)

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What is amphoteric substance

Posted by Surjeet Choudhury 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Yogita Ingle 6 years, 11 months ago

Substances which can act both as acids, as well as bases, are called amphiprotic or amphoteric substances. When we look just at Bronsted-Lowry acids and bases we can also talk about amphiprotic substances which are a special type of amphoteric substances.

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Ayushi Ayushi 6 years, 11 months ago

In chemistry, an amphoteric compound is a molecule or ion that can react both as an acid and as a base. Many metals (such as copper, zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. ...

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State modern periodic law?

Posted by Reshma Khatoon 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Yogita Ingle 6 years, 11 months ago

Modern Periodic Law: It states that "The physical and chemical properties of the elements are the periodic function of their atomic numbers."
According to this law, if we arrange the elements on basis of their increasing atomic numbers, we find that the elements with similar physical and chemical behavior will be grouped together after a certain interval of elements.
Here, the "periodic function" is used because the properties of elements are repeated after a periodic time (i.e. after a fix no. of elements) with atomic numbers.

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Lavanya ❤️? 6 years, 11 months ago

The properties of elements are periodic function of their atomic number

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An atom of an element contains 29 electron and 35 neutrons. Deduce the electronic configuration of the element

Posted by Reshma Khatoon 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Lavanya ❤️? 6 years, 11 months ago

The electronic configuration of the element = 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d9

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What is entalpy

Posted by Sahil Malha 6 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Ankit Singh 6 years, 11 months ago

Nice answer Ayushi

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Ayushi Ayushi 6 years, 11 months ago

Enthalpy is a thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume.

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Lavanya ❤️? 6 years, 11 months ago

Enthalpy is a property of a thermodynamic system, is equal to the system's internal energy plus the product of its pressure and volume.

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What is diffrence between combustion of aliphatic and aromatic compounds

Posted by Kina Murabbi 6 years, 11 months ago

CBSE > Class 11 > Chemistry