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chemisty

Posted by Hanumantappa B 4 years, 1 month ago

1 answers

Krishna Singh 4 years, 1 month ago

Chemistry is the branch of science in which we read about chemical reactions and the phenomenon done from chemistry are known as chemistry

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How many Ham of solute is required to prepare one litre of 1m cacl 2.6 h2o

Posted by Diksha Sajwan 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 4 years, 1 month ago

Answer:

molar mass ofCaCl2.6H2O = 40 + 2(35.5) + 6(18)

= 219 g mol^-1

Molarity = weight of solute * 1000 / molar mass of solute * volume

1 = weight of solute * 1 / 219 * 1

weight of solute = 219 gm

here volume is already given in litre so we don't need to multiply with (1000).

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Application of osmosis

Posted by Aarohi Singh 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Tanya ?? 4 years, 1 month ago

Osmosis may be used directly to achieve separation of water from a solution containing unwanted solutes. ... Forward osmosis is an area of ongoing research, focusing on applications in desalination, water purification, water treatment, food processing, and other areas of study...

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iupac naming of cordination compounds.

Posted by Swathi Ananthanarayanan 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Sanjana Dua?????❣️ 4 years, 1 month ago

Triammine trinitro -N -cobalt(3)

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Swathi Ananthanarayanan 4 years, 1 month ago

[Co(NH3)3(No2)3]

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ANSWER

How will you convert bromo propane into pentane . Acc to corey house reaction

Posted by Kaku Balhara 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Write down the reaction of formation of oxime with the help of carbonyl group

Posted by ~@Kanchi Jawla 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What happen when carbonyl group react with hydrazine?

Posted by ~@Kanchi Jawla 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

~@Kanchi Jawla 4 years, 1 month ago

0Thank You

ANSWER

Ʌ0m(NH₄OH) =

Posted by Jagdish Chaudhari 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Hand written notes of dblock elements

Posted by Nikita Bisht 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

N2 + 3h2 - 2Nh3...During the formation of Ammonia 2 mol of N2 disappear

Posted by Mayank Tiwari 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 4 years, 1 month ago

**Rate of change of concentration ammonia = -0.2 * 10^-4 M/s**

Explanation:

Given: N2+3H2 →2NH3. During the formation of ammonia 2 moles of nitrogen disappear in 1min. The volume of vessel is 1L.

Solution:

N2 + 3H2 -----> 2NH3

-d[H2] / dt = 0.3 * 10^-4 M/s

Rate = (1/3)(-d[H2] / dt)

= (1/2) (d[NH3] /dt)

= d[NH3] / dt

= (2/3)( -d[h2]/dt)

= d [NH3]/dt

d[NH3] /dt = -2/3 (0.3 * 10^-4)

d[NH3] /dt = -0.2 * 10^-4 M/s

Rate of change of concentration ammonia is the answer.

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ANSWER

Wax is an example of which type of crystalline solid

Posted by Srijal Rai 4 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Rtk Thakur 4 years, 1 month ago

Amorphous

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~@Kanchi Jawla 4 years, 1 month ago

Wax is an example of amorphous solid

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Gaurav Seth 4 years, 1 month ago

A n s w e r : Molecular crystal
E x p l a n a t i o n :
wax crystals are molecular crystals, in which constituent particles are molecules having inter particle forces are Vander Waal’s forces.

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Structure of 2,3dimethyl phenol

Posted by Adha Mehrin 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

~@Kanchi Jawla 4 years, 1 month ago

Make (Benzene -OH) and now attach methyl group (CH3) At its second and third position .These position should determined according to the position of OH group.

1Thank You

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conversion of propane to propanol

Posted by Shibashish Meher 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Mahi Barnwal 4 years, 1 month ago

CH3CH2CH3 react with HCL in presence of sunlight or UV ray ,gives chloropropane . Chloropropane react with KOH gives propanol....

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Syllabus for class 12th cbse

Posted by Nikki ... 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 4 years, 1 month ago

On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.

CBSE has rationalized the syllabus with the help of suggestions from NCERT and the same has been notified by a new CBSE notification as well.

Deleted syllabus of CBSE Class 12 Chemistry

For revised syllabus click on the given link:

<a href="http://cbseacademic.nic.in/web_material/CurriculumMain21/revisedsyllabi/SrSecondary/REVISEDChemistry_2020-21.pdf" target="_blank">REVISED - Chemistry</a>

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What is the effect on crystal

Posted by Shifana Shirin R S 3 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 3 years, 7 months ago

Crystal meth is the common name for crystal methamphetamine, a strong and highly addictive drug that affects the central nervous system. There is no legal use for it.

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ANSWER

Ardhchalak. Hindi me btaye

Posted by Puspa Patail 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Band siddhant

Posted by Puspa Patail 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Most reactive resonating structure of acetic acid

Posted by Saurabh Singh 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why do solids have a definite volume.

Posted by Muztaba Ali 4 years, 1 month ago

CBSE > Class 12 > Chemistry

4 answers

Sheenu Patel 4 years, 1 month ago

Because the intermolecular forces of attraction between the particles in solids are very strong and the constituent particles of solids have fixed position ..... ?

2Thank You

Yangzee Sherpa 4 years, 1 month ago

Solids have a definite volume because the intermolecular forces of attraction between the particles in solids are very strong and the constituent particles of solids have fixed position i.e., they are rigid. HoPe It HeLpS yOu??

2Thank You

? . 4 years, 1 month ago

Due to strong intermolecular forces between the particles

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Gaurav Seth 4 years, 1 month ago

The intermolecular forces of attraction that are present in solids are very strong. The constituent particles of solids have fixed positions i.e., they are rigid. Hence, solids have a definite volume.

1Thank You

ANSWER

Which of these methods can be used to prepare alcohols

Posted by Priyanshu Biswas 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Savitri Sinha 4 years, 1 month ago

Vilyan ki paribhasha aur uske prakar

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Ayushi Kurmi 4 years, 1 month ago

Preparation of alcohol:- 1.from haloalkanes 2.from aldehydes and ketones (i)Reduction (ii) from grignard reagent 3.from alkenes 4.by hydroboration oxidation 5.reduction of carboxylic acids and esters

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convert 1-iodo butane to n-octane

Posted by Harsha Harsha 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Sanjana Dua?????❣️ 4 years, 1 month ago

By wurtz reaction

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ANSWER

Predict the stereochemistry of the product formed if an optically active alkyl halide undergoes substitution reaction by SN1 mechanism. 2. Name the instrument used for measuring the angle by which the plane polarised light is rotated. 3. Predict the major product formed when 2-Bromopentane reacts with alcoholic KOH. 4. Give one use of CHI3 . 5. Write the structures of the products formed when anisole is treated with HI

Posted by Rashmi Singh 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 4 years, 1 month ago

Racemisation occurs in case of SN1 reaction.

Explanation:

SN1 is the process of substitution reaction where there is a carbocation formation and then a nucleophilic attack on that carbocation to form a product.

The SN1 reaction intermediate is a carbocation.

Now a carbocation is a sp2 hybrid structure which is planar.

So the nucleophile can attack from any side of the plane.

So the product that is formed is a mixture of both the stereoisomers.

So the product is a racemic mixture.

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ANSWER

Heya

Posted by Shivani Kumari 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Mahendra Rathor 4 years, 1 month ago

❓❓❓❓

0Thank You

ANSWER

Hydrogen has n mole and helium has 2 mole and Cp/Cv=3/2 so what is n ?

Posted by Hiral Solanki 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Yrr kisi ke pass handwriting topper notes h to yrr plz ???pdf send kr do plz plz???

Posted by Ãshïsh Jaíñ 4 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Sanjana Dua?????❣️ 4 years, 1 month ago

I also want but I need of organic chemistry

1Thank You

Prisha Rathore 4 years, 1 month ago

I also want

1Thank You

Gaurav Seth 4 years, 1 month ago

CBSE Topper Answer Sheet Class 12 Chemistry

Academic Year	Topper Answer Sheet
Class 12 Chemistry Topper Answer Sheet 2018	<a href="https://drive.google.com/uc?export=download&id=1rK7xoVpPVWdldC1TVJ9_XxBDj3Ue5y0m">PDF Download</a>
Class 12 Chemistry Topper Answer Sheet 2017	<a href="https://drive.google.com/uc?export=download&id=1CxGZqD9yRdtmt5AxUPDl7AtT8kEEQwF2">PDF Download</a>
Class 12 Chemistry Toppers Answer Sheet 2016	<a href="https://drive.google.com/uc?export=download&id=1FnLrtKaZesA5erWlcKWyTh4vlyIjPb7_">PDF Download</a>
Class 12 Chemistry Toppers Answer Sheet 2014	<a href="https://drive.google.com/uc?export=download&id=1Ip6_2JZvNZc3WmEOKSmmztu5jetBQ7gF">Download PDF</a>

3Thank You

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Is the molecule exist - carbon with four OH?

Posted by Anvesh Sharma 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Suhaani Sharma 4 years, 1 month ago

No,it doesn't exist because the OH grp on same carbon react with each other to form water But hypothetically it is possible the name of this compound is orthocarbonic acid

0Thank You

ANSWER

Guys Tell me, Kya class12th main 90%+ lane k liye ncert book sufficient hai. Yadi nhi hai toh maths physics and chemistry k liye konsi book acchi hai. And kya chapterwise question karna sahi rhega. Jaldi bto..tnx

Posted by Just Example 4 years, 1 month ago

CBSE > Class 12 > Chemistry

4 answers

Mahima Verma 4 years, 1 month ago

Only ncert book is for board examination

0Thank You

Ananya Mahapatra 4 years, 1 month ago

Not sufficient.. Maths Rs Agarwal... Physics... Sl arora.... Chemistry... Comprehensive.... Rather you can use xamidea for every subject

0Thank You

Prisha Rathore 4 years, 1 month ago

yup

0Thank You

Sourabh Raghuwanshi 4 years, 1 month ago

Yes

0Thank You

ANSWER

Ko2 is para and dimagnetic

Posted by Priyanshu Chauhan 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Tanya ?? 4 years, 1 month ago

Paramagnetic

1Thank You

ANSWER

Which chapters you have completed in all subject comment

Posted by Krishna Yadav 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the solubility of a solid in a liquid? Describe the various factors on which the solubility of a solid in a liquid depends?

Posted by Krishna Yadav 4 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Krishna Yadav 4 years, 1 month ago

But I didn't understand the answer starting paragraph of answer

0Thank You

Krishna Yadav 4 years, 1 month ago

Thnx very much

0Thank You

Yogita Ingle 4 years, 1 month ago

The maximum amount of solute that can dissolve in a known quantity of solvent at a certain temperature is its solubility.

The solubility of a substance depends on the physical and chemical properties of that substance. In addition to this, there are a few conditions which can manipulate it. Temperature, pressure and the type of bond and forces between the particles are few among them.

Temperature: By changing the temperature we can increase the soluble property of a solute. Generally, water dissolves solutes at 20° C or 100° C. Sparingly soluble solid or liquid substances can be dissolved completely by increasing the temperature. But in the case of gaseous substance, temperature inversely influences solubility i.e. as the temperature increases gases expand and escapes from their solvent.
Forces and Bonds: Like dissolves in like. The type of intermolecular forces and bonds vary among each molecule. The chances of solubility between two unlike substances are more challengeable than the like substances. For example, water is a polar solvent where a polar solute like ethanol is easily soluble.
Pressure: Gaseous substances are much influenced than solids and liquids by pressure. When the partial pressure of gas increases, the chance of its solubility is also increased. A soda bottle is an example of where CO₂ is bottled under high pressure.

2Thank You

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Page 60 of 609

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**Rate of change of concentration ammonia = -0.2 * 10^-4 M/s**

Deleted syllabus of CBSE Class 12 Chemistry

Racemisation occurs in case of SN1 reaction.

Explanation:

CBSE Topper Answer Sheet Class 12 Chemistry

Pressure: Gaseous substances are much influenced than solids and liquids by pressure. When the partial pressure of gas increases, the chance of its solubility is also increased. A soda bottle is an example of where CO₂ is bottled under high pressure.

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myCBSEguide

Rate of change of concentration ammonia = -0.2 * 10^-4 M/s

Deleted syllabus of CBSE Class 12 Chemistry

Racemisation occurs in case of SN1 reaction.

Explanation:

CBSE Topper Answer Sheet Class 12 Chemistry

Pressure: Gaseous substances are much influenced than solids and liquids by pressure. When the partial pressure of gas increases, the chance of its solubility is also increased. A soda bottle is an example of where CO2 is bottled under high pressure.

myCBSEguide

Test Generator

CUET Mock Tests

Download myCBSEguide App

All Courses

Other Websites

CBSE Courses

Resources

Corporate

NCERT Solutions

CBSE Sample Papers

**Rate of change of concentration ammonia = -0.2 * 10^-4 M/s**

Pressure: Gaseous substances are much influenced than solids and liquids by pressure. When the partial pressure of gas increases, the chance of its solubility is also increased. A soda bottle is an example of where CO₂ is bottled under high pressure.