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Diffrence b/w ideal nd non ideal solution

Posted by Robin Singh Pundeer 6 years, 1 month ago

2 answers

Nithin V 6 years, 1 month ago

The soln which obeys raoults law over a range of concentration called ideal soln The soln which doesnot obey is called non ideal soln

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Muskan Khan 6 years, 1 month ago

Ideal solution * obey raults law for entire range of temperature and pressure. Non ideal solution *Don't follow raults law for entire range of temperature and pressure.

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Coordination ratio change to lower number

Posted by Vivek Raj 6 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

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कोर्ट ने संदेशों चेंज टू लोहार नंबर एग्जांपल 8282 626 ऑन

Posted by Vivek Raj 5 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Vijeta Bhadana 6 years, 1 month ago

Mtlb

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Write the hybridisation and magnetic character of [Co(C2O4)3]3_

Posted by Leo Arockiasamy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

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How to identify whether the Ligand is strong or weak . Give strong ligand seperatly and weak legand seperatly

Posted by Leo Arockiasamy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Leo Arockiasamy 6 years, 1 month ago

Beginning means up to which

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Vemula Chowdary 6 years, 1 month ago

Firstly, you should refer to the spectrochemical series. You may find that series in the chapter Complex Compounds. Now, generally the ligands at the beginning of the series are Weak Field Ligands and the ligands at the end are the Strong Field Ligands.

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Why ionisation enthalpy of vanadiun is less than titanium

Posted by Aniket Kumar 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Vemula Chowdary 6 years, 1 month ago

The outer electronic configuration of Vanadium is 3d34s2. There are 3 electrons in '3d' shell which are shielding the 4s electrons from the nucleus which means 4s electrons are easy to remove. Hence ionisation enthalpy of Vanadium is less than Titanium.

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What do you mean by absolute alcohol?

Posted by Deeya Singh 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 1 month ago

Absolute alcohol is 100% ethanol which is prepared from rectified spirit.
Absolute alcohol is prepared by Azeotropic distillation method. Rectified spirit is mixed with a suitable amount of benzene and subjected to fractional distillation. The last fraction at 351 K b.p is absolute alcohol.

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Calculate the number of lone pairs on central atom in the following molecule and pridict the XeF4

Posted by Salim Siddiqui 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Kunal M 6 years, 1 month ago

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There is a problem in chemistry In. Chemistry chapter alcohol,phenol and ,carboxlic acid Cbse 2 marks important questions k answers galat h So dont learn that and check first is it right or not

Posted by Neha Choudhary 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Saqib Khan 6 years, 1 month ago

Galt baat

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When hcl react with finally powdered iron it form ferrous chloride not ferric chloride why

Posted by Nitin Gangari 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Neha Choudhary 6 years, 1 month ago

Ferric chloride bnta h bt vo reduce ho jata h Hydrogen se and finally Ferrous chloride is formed

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Practical date ??

Posted by Utkarsh Singh 6 years, 1 month ago

CBSE > Class 12 > Chemistry

4 answers

Srishti Choudhary ✍⏳ 6 years, 1 month ago

From 1January To 7 February

3Thank You

Yashi Rajpoot 6 years, 1 month ago

From 1 January to 7 February

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Rinku Chaudhary 6 years, 1 month ago

1 January se1 February tak

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Raj Gaurav 6 years, 1 month ago

I heard tha practice will be held in February

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Why we always use hbr in kharaash effect?

Posted by Prince Jain 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Neha Choudhary 6 years, 1 month ago

Becoz only HBR in persence of peroxide give antimarkonicoves product so we use this always

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Is Arihant is good guide for board exam?

Posted by Leo Arockiasamy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Aman Kumar 6 years, 1 month ago

Yes,. Of course

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In p block 15th group is there or not there?

Posted by Leo Arockiasamy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Yashi Rajpoot 6 years, 1 month ago

Not in the syllabus

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Neha Choudhary 6 years, 1 month ago

No it is not in cbse syllabus only for 2019-20 but from next year it is in syllabus U dont need to study it from board point of view

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Ritesh Chakraborty 6 years, 1 month ago

Yes you have to study group 15 too

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What is difference between fcc and bcc

Posted by Rupesh Singh 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 1 month ago

BCC vs FCC
The term BCC stands for the body-centered cubic arrangement of spheres (atoms, molecule or ions from which the lattice is made of).	The term FCC stands for the face-centred cubic arrangement of spheres.
Arrangement of Spheres
BCC has spheres in the eight corners of a cube and one sphere in the centre of the cube.	FCC has spheres in the eight corners of a cube and also in the centres of the cubic faces.
Coordination Number
The coordination number of the BCC structure is 8.	The coordination number of the FCC structure is 12.
Packing Factor
The packing factor of BCC is 0.68	The packing factor of FCC is 0.74
Number of Spheres in a Unit Cell
A unit cell of BCC has a net total of 2 spheres.	A unit cell of FCC has a net total of 4 spheres.
Examples
Some examples of metals that have the BCC structure include Lithium (Li), Sodium (Na), Potassium (K), Chromium (Cr) and Barium (Ba).	Some examples of the metals having FCC structure are Aluminum (Al), Copper (Cu), Gold (Au), Lead (Pb) and Nickel (Ni).

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Can a reaction have zero activation energy?

Posted by Quantum Gaming 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Yogita Ingle 6 years, 1 month ago

Yes a reaction can have zero activation energy.Process with zero activation energy most commonly involve the combination of oppositively charged ions or the pairing up of electron in free radicals.For ex- dimerization of nitric oxide(NO2) to N2O4 which is an odd electron molecule have zero activation energy.

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Neha Choudhary 6 years, 1 month ago

Yes

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Account for the fact thatvwhen chlorine is passed through a fluoride solution,no reaction takes place

Posted by Diksha Pal 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Leo Arockiasamy 6 years, 1 month ago

Fluorine is high electronic negative element, it bond with only high positive element

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What happened when potassium chloride KClO3 is heated in the presence of MnO2

Posted by Sourav Bhardwaj 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Deeya Singh 6 years, 1 month ago

When potassium chlorate (KClO3) is heated in the presence of manganese dioxide catalyst, it decomposes to form potassium chloride and oxygen gas.

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Elements of group 16 generally show lower value of first ionisation enthalpy compares to corresponding periods of the group 15?why

Posted by C. S. Samrath 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Jasmeen Kaur 6 years, 1 month ago

Due to stable electronic configuration of 15 group they have high ionisation enthalpy

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Explain the alkyl halides though polar are immiscible with water

Posted by Pankaj Tiwari 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Deeya Singh 6 years, 1 month ago

In order to dissolve haloalkane in water, energy is required to overcome the attractions between the haloalkane molecules and break the hydrogen bonds between water molecules. Less energy is released when you attractions are set up between the haloalkanes and the water molecules as these are not as strong as the original hydrogen bonds in water. As a result alkyl halides or haloalkanes though polar are immiscible in water.

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Pragati Gola 6 years, 1 month ago

Due to it's inability to form hydrogen bond with water

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Anisole

Posted by Nikhil Singh 6 years, 1 month ago

CBSE > Class 12 > Chemistry