CBSE > Class 12 > Chemistry | CBSE Board | Homework Help

Potassium hydrosulfide is the inorganic compound with the formula KHS. This colourless salt. It is the product of the half-neutralization of hydrogen sulfide with potassium hydroxide. The compound is used in the synthesis of some organosulfur compounds. It is prepared by neutralizing aqueous KOH with H₂S. Potassium hydrosulfide is synthesized by the reaction between a solution of potassium sulfide with excess hydrogen sulfide.

2Thank You

ANSWER

Write the reaction of ethyl alcohol with sulphuric acid under different conditions?

Posted by Rekha Pathak 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Pooja Sharma 7 years, 5 months ago

CH3CH2OH +H2SO4 gives elimination product ethene

0Thank You

ANSWER

Rust is mixture of_

Posted by Lipika Yadav 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Abhinav Sharma 7 years, 5 months ago

I think it's a metal oxide

1Thank You

Abhinav Sharma 7 years, 5 months ago

Metal and moisture

0Thank You

ANSWER

Why are phenols stronger acids than water and alcohols

Posted by Shrey Shekhar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Pooja Sharma 7 years, 5 months ago

Phenols after losing proton stabilise by resonance

1Thank You

ANSWER

Neopentyl chloride does not follow sn2 mechansims.

Posted by Saraswati Ji 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Pooja Sharma 7 years, 5 months ago

Due to steric hinderance

0Thank You

ANSWER

A plot of rate of reaction of y axis versus concentration of reactant x axis give aline parallel to x axis what is the order of reaction

Posted by Rajan Yadav 7 years, 5 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the relation b/w Kb and latent heat of vaporisation

Posted by Ajin Sreekumar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Riya Chaurasiya 7 years, 5 months ago

Kb is inversely proportional to latent heat of vaporisation

0Thank You

ANSWER

What is the difference b/w Kb &Kf?

Posted by Ajin Sreekumar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Riya Chaurasiya 7 years, 5 months ago

Kb is boiling constant and Kf is freezing constant

0Thank You

ANSWER

CH3-CH2-CH2-CH(CH3)-CH(CH3)-CH2-CH2 -CH2 -CH2 -CH(CH3)-CH2-CH2 .write the IUPAC name of the given compound?

Posted by Abhi Sunny 7 years, 5 months ago

CBSE > Class 12 > Chemistry

5 answers

Septima Ravenclaw 7 years, 5 months ago

The previous one is correct but if u are considering that the substituent shuld be near the end then the 389trimethyldodecane one is preffered

0Thank You

Abhi Sunny 7 years, 5 months ago

Which one is right

0Thank You

Septima Ravenclaw 7 years, 5 months ago

Yeah .. then it will be 3,8,9-trimethyldodecane

0Thank You

Abhi Sunny 7 years, 5 months ago

But here in given compound the substituent is near from right

0Thank You

Septima Ravenclaw 7 years, 5 months ago

4,5,10-trimethyldodecane

3Thank You

ANSWER

Which is the best practice book of chemistry

Posted by Surabhi Kumari 5 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Pooja Sharma 7 years, 5 months ago

Ncert and cingage

2Thank You

Sneha S 7 years, 5 months ago

Mtg cbse champion chemistry class 12 chapterwise solved papers.

1Thank You

Gouri Dashore 7 years, 5 months ago

For clear 12 ncrt is best its example & exercise qua.

0Thank You

ANSWER

Can we store cuso4 solution in zn pot?

Posted by Albert Thomas 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Deepika Sharma 7 years, 5 months ago

No, bcoz Znso4 is more reactive than Cu

0Thank You

ANSWER

Which made the upper part of capsules ?? Ans-- gelatin But what is gelatin ( soft and hard ) In hindi

Posted by Muhammad Shahnoor 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Muhammad Shahnoor 7 years, 5 months ago

Yeah!!!But I m not confirm bcoz differ answers may be showing ???

0Thank You

Rishabh Sahu 7 years, 5 months ago

I think google can give the best answer.

2Thank You

ANSWER

Cast iron and pig iron difference

Posted by Amit Kumar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Lipika Yadav 7 years, 5 months ago

Pig iron is that iron which obtained from blast furnace contains 4%carbon whereas cast iron is obtained by melting pig iron and contains lower carbon content

3Thank You

ANSWER

The number of unit cell in 58.5 g of NaCl is nearly :- (A). 6×10^20 (B). 63×10^22 (C). 1.5×10^23 (D). 0.5×10^24

Posted by Deepak Rao 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Deepak Rao 7 years, 5 months ago

How???

0Thank You

Aastha Sarswat 7 years, 5 months ago

0Thank You

ANSWER

Cutting onions taken from the fridge is more comfortable than cutting onions lying at room temperature. Explain why??

Posted by Deepak Rao 7 years, 5 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why both dextro and leaving forms of butane-2-ol are prepared in equal proportion when sn1 reaction of 2-cholorobutane is carried out in the presence of aqueous potassium hydroxide?

Posted by Sakshi Patil 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Manan Bedi 7 years, 5 months ago

Bcz Sn1 mechanism is characterised by racemisation process

0Thank You

ANSWER

Why ejection of oxygen molecule /atoms By manmade is not possible to stop ozone Depletion?

Posted by Inder Dhillon 7 years, 5 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is formula for urea

Posted by Naga Sai Kiran Parvataneni 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Mansi Kabdal 7 years, 5 months ago

NH2CONH2

1Thank You

Naga Sai Kiran Parvataneni 7 years, 5 months ago

NH2CONH2

3Thank You

ANSWER

Calculate standard EMF for the following reactions Zn(s) +2Ag (aq) ➡️2Zn +(aq) +2Ag(s)

Posted by Mansi Kabdal 7 years, 5 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is exact meaning of azeotrope and it's use

Posted by Harshita Farkya 7 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Priyanshu Gupta 7 years, 5 months ago

Composition ofLiquid phase =vopour phase in solution..

1Thank You

Ss R 7 years, 5 months ago

a mixture of two liquids which has a constant boiling point and composition throughout distillation.

2Thank You

ANSWER

Carboxylic acid is more acidic than phenol why

Posted by Anmol Kumar 7 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Manan Bedi 7 years, 5 months ago

Because the carboxylate ion formed during the ionisation is more stable as the negative charge is delocalised over two oxygen atoms as compared to one oxygen atom in phenolic ion

1Thank You

ANSWER

What vplume of water should be added to 20 ml of seminormal HCL to make it decinormal?

Posted by Sakshi Jha 7 years, 5 months ago

CBSE > Class 12 > Chemistry