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Why is sulphuric acid is not used during the reaction of alcohol with KI

Posted by Juned Manyar 7 years ago

CBSE > Class 12 > Chemistry

2 answers

Hritik Yadav 7 years ago

In the presence of sulphuric acid (H2SO4), KI produces HI 2KI + H2SO4 → 2KHSO4 + 2HI Since H2SO4 is an oxidizing agent, it oxidizes HI (produced in the reaction to I2). 2HI + H2SO4 → I2 + SO2 + H2O As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI. Instead, a non-oxidizing acid such as H3PO4 is used.

Tanisha Saini 7 years ago

Because h2so4 will oxidise ki to i2 ( as in p block)

ANSWER

Why HgI2 is called complex salt

Posted by Mohit Tatal 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Convert CH3COOH into NH2CH2COOH

Posted by H!Mαη$Hμ Ұαδαυ ✔️ 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Most important questions

Posted by Shivaraj Chinna 7 years ago

CBSE > Class 12 > Chemistry

1 answers

H!Mαη$Hμ Ұαδαυ ✔️ 7 years ago

Question of previous papers

ANSWER

2 n2o 5 gives N2 o4 + O2 calculate the rate constant

Posted by S M 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Zno crystal on heating acquires the formula Zn1+xO .give reason ?

Posted by Amit Chaudhary 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Different between acetophenon and benzophenone

Posted by Pooja Gupta 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Ash Thunderbird ✔ 7 years ago

Acetophenone and Benzophenone can be distinguish by using iodoform test. However, Benzonphenone does not contain any free methyl group so it will give a negative test. 1) C₆H₅COCH₃ + 3NaOl → C₆H₅COONa+ CH₃ +2NaOH Acetophenone + Sodium Hypoiodite → Sodium Benzate + Iodoform (yellow ppt) 2) C₆H₅COC₆H₅ + NaOl → No yellow ppt of CH₃ Benzophenol + Sodium Hypoiodite → No yellow ppt of CH₃

ANSWER

how to use markovnicov's and antimarkovnicov's rule?

Posted by Jyoti Prakash Rai 7 years ago

CBSE > Class 12 > Chemistry

2 answers

Vartika Singh Sengar 7 years ago

Hlw dear suppose karo ki apke pass propene hi usko apko propanol banana hi CH3CH=CH2 + H2O(HoH) will add OH in that alpha carbon which has less no. Of hydrogen i.e (CH) and H on other . This is markonikov. Hence in product side you will get CH3CH(OH)CH3 Antimarkonikov me apko peroxide arrow ke uper likha milega . Usme , add hydrogen in that alpha carbon where no of hydrogen is more. Hence you get CH3CH2CH2(OH).

Tanisha Saini 7 years ago

If there is no peroxide use markovnikov And vice versa

ANSWER

What inspired N. Barlett for carry out the reaction between Xe and PtF6?

Posted by Mahi Sharma 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Amit Chaudhary 7 years ago

n.barlett prepared a red colour compound o2positive ptf6negative. he then realised first ionization enthalpy of molecular o2 was identical with Xeon so he carried out reaction b/w xe nd ptf6

ANSWER

Test to distinguish between acetophenone and acetone by chemical test

Posted by Sapna Batra 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How to complete chemistry 12 in a month

Posted by Vikas Meena 7 years ago

CBSE > Class 12 > Chemistry

3 answers

Tanisha Saini 7 years ago

Study ncert with full concentration it will help you

Yo Yo Honey Singh ? 7 years ago

You have to give maximum time to ur studies,in studies most of the time to chemistry.

Harshit Singh 7 years ago

very simple think that you have completed it already stay happy just chill??

ANSWER

Define denaturation of alcohol.

Posted by Sayeda Iram Ateeq 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Akhilesh Parihar 7 years ago

Denatured alcohol, also called methylated spirit or denatured rectified spirit, is ethanol that has additives to make it poisonous, bad-tasting, foul-smelling, or nauseating to discourage recreational consumption. It is sometimes dyed.

ANSWER

chemistry me konsa chapter ko skip karna chahiye ?????

Posted by Rajesh Rout 5 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Yo Yo Honey Singh ? 7 years ago

Every chapter is important but if you don't have time then skip those chapters if you think that it is very time taking and it is creating a lot of difficulty to you to understand

H!Mαη$Hμ Ұαδαυ ✔️ 7 years ago

What is your target if it is 65+ in theory then you should not skip even a single topic

Mansi Sharma 7 years ago

If u have bio then skip biomolecules .

ANSWER

Europium(Eu+) is a very good reducing agent.Comment.

Posted by Shivlendra Singh 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Mounesh Narayanan 5 years, 8 months ago

Yes

ANSWER

Give reason for Mercury cell having constant potential throughout its life?

Posted by Farhan Syed 7 years ago

CBSE > Class 12 > Chemistry

3 answers

Farhan Syed 6 years, 11 months ago

Thank you both❤️

Vishali Raina 7 years ago

Mercury cell has constant potential throughout it's life as the final equation of it does not involve any ion.

Manish Rawat 7 years ago

Due to absence of ions

ANSWER

The paramagnetic complex ion which is decomposed by dilute sulphuric acid is

Posted by Janki Grover 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Jasvant Kumar 5 years, 6 months ago

?

ANSWER

Gatterman equation

Posted by Rukhman Choudhari 7 years ago

CBSE > Class 12 > Chemistry

2 answers

Ayush Agarwal 7 years ago

Dizomium salt gives aryl gallide in the presence of ( CuX / HX )

Shivlendra Singh 7 years ago

Benzene in the presence of CO+HCL and anhydrous cucl2(promotor) gives benzaldehyde as a major organic product

ANSWER

Bleaching powder (hot and conc.) NaOH+CaCl2 gives product-

Posted by Hrischndr Kushwaha 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Write the mechanism of hydration of ethane to form ethanol

Posted by Kunal Singh 7 years ago

CBSE > Class 12 > Chemistry

1 answers

H!Mαη$Hμ Ұαδαυ ✔️ 7 years ago

It should be ethene

ANSWER

Lead compound

Posted by Prateek Raj 7 years ago

CBSE > Class 12 > Chemistry

1 answers

A B 7 years ago

Lead nitrate

ANSWER

SOMEONE HAS DONE CHEMISTRY SALT ANALYSIS PRACTICAL WELL. SO PLEASE HELP ME.

Posted by Ayush Jindal 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Rajan Gupta 7 years ago

Hi it will be very beneficial to watch online lectures and videos of practicals

ANSWER

Blue print of 2019

Posted by Vipin Kumar 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Ayush Jindal 7 years ago

CHECK OFFICIAL WEBSITE OF CBSE.

ANSWER

What is electron gain enthalpy?when is it negative&positive

Posted by Krishnendu S K 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Explain half life period for first order reaction ...

Posted by Surbhi . 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Navya Mitra 7 years ago

Half life period for 1st order reaction does not depend upon its concentration,i.e .it's independent of its concentration. Half life for 1st order reaction = 0.693/ k

ANSWER

The preservation of fruits by adding concentrated sugar solution protects against bacterial action

Posted by Anjali Gupta 7 years ago

CBSE > Class 12 > Chemistry

2 answers

Àñshul Shärmã 7 years ago

Due to Osmosis bacteria loses water on fruits then shrivels and die.....

Shashikant Kumar 7 years ago

What's your question?

ANSWER

How are polymers

Posted by Jija Chavan 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Ash Thunderbird ✔ 7 years ago

Polymers are very large molecules that are formed by the combination of a large number of simple molecules called monomers by chemical bonds OR Polymers are the macromolecules which have very high molecular masses (10³ to 10^7 u)

ANSWER

Syn gas formula???

Posted by Yashmit Sharma 7 years ago

CBSE > Class 12 > Chemistry

2 answers

Gourav Singh 7 years ago

Mixture of methane hydrogen nitrogen etc also called wood gase

Gourav Singh 7 years ago

Poisnous gas

ANSWER

How to convertion of reactions

Posted by Mohit Soni 7 years ago

CBSE > Class 12 > Chemistry

1 answers

Vartika Singh Sengar 7 years ago

Hy mohit if you are facing problems in conversations . Write all reactions on paper and solve cbse guide materials or chapterwise . Solve them with help of paper . Soon you will remmember all reactions . After completing each chapter stick that paper on wall so that you will not forget them

ANSWER

Any body have a already named rxn

Posted by Mohit Soni 7 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How many name rxn in chemistry class 12 ?

Posted by Sudhanshu Kumar 7 years ago

CBSE > Class 12 > Chemistry

2 answers

Santoshee Prajapati 7 years ago

What is rxn

Yo Yo Honey Singh ? 7 years ago

I can't say exactly but I think it will be almost 50

ANSWER

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