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

Ask questions which are clear, concise and easy to understand.

Ask Question

How can we find standard potential difference?

Posted by Priyanshu Sharma 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Sakshi Tomar 7 years, 7 months ago

Standard electrode potential= standard potential of cathode _ standard potential of anode

4Thank You

ANSWER

IPUAC name of Iso-butyl chloride

Posted by Shrishty Kumari 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Hemant Singh 7 years, 7 months ago

2-chloro butane

1Thank You

ANSWER

Write SHE reaction when it work as anodic form

Posted by Sakshi Tomar 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How did the names of blocks in periodic tabke define? Means that why the s-block Is given and not any other alphabet?

Posted by Dharshika As 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Septima Ravenclaw 7 years, 7 months ago

Because of the orbital like s orbital p orbital and so on....s block elements are given the name s block because the last orbital which is filled is s orbital

1Thank You

ANSWER

How can you select the electrode in electrochemical cell

Posted by Sakshi Tomar 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is SN1 mechanism.

Posted by Devi Prasad Mohanty 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Septima Ravenclaw 7 years, 7 months ago

It is a one step mechanism , rate of reaction depends upon only one of the reactants , first order mechanism , unimolecular and reactivity of alkyl groups in alkyl halides is 3°>2°>1°

0Thank You

ANSWER

Arrange followimg in increasing order of reducing character H3PO3 , H3PO2 ,H3PO4

Posted by Hemant Joshi 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the state of cotten

Posted by Paryas Chauhan 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

The accidental touch of Nettle leaves creates burning sensation which is due to inject of

Posted by Govind Choudhary 7 years, 7 months ago

CBSE > Class 12 > Chemistry

3 answers

Princesses Kaur 7 years, 7 months ago

????

0Thank You

Jin Kazama 7 years, 7 months ago

You need to be carefull.ABC(Always Be Carefull) ???

0Thank You

Govind Choudhary 7 years, 7 months ago

Methanoic acid

0Thank You

ANSWER

What is chemical Reaction?

Posted by Ravi Kumar 7 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Payal Verma 7 years, 7 months ago

It is a process which leads to transformation of one chemical substance to another.

1Thank You

Krish Kumar 7 years, 7 months ago

In which two substances are react each other and to form new substance.

0Thank You

ANSWER

The no. Of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 sec is

Posted by Maitrie Solanki 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Saurabh Baghel 7 years, 7 months ago

I=q/t where q =ne (no.of electon ×charge of electron) Now I=1 amp and t = 60 sec then 1amp= ne/60 and e =1.6×10to the power -19 by putting these value we in above eq. We get n=3.75×10to the power 20

0Thank You

ANSWER

notes on chapter atomic weight,molecular weight and equivalent weight

Posted by Amit Kumar 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

why does no2 group shows its effect only at ortho and para positiion not at meta position

Posted by Rhitika Rai 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 7 months ago

In it's resonating structures the positive charge is stabilized at ortho and para positions but not at meta position.

1Thank You

ANSWER

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

Posted by Ibrahim Shaikh 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Payal Verma 7 years, 7 months ago

Since H2SO4 is an oxidizing agent, it oxidizes HI. As a result the reaction between alcohol and HI to produce alkyle iodide cannot occur. Therefore sulphuric acid is not used during the reaction of alcohol with KI.

0Thank You

ANSWER

Calculate the boiling point of solution if 4 g of MgSO4 is dissolve in 100 g of water assuming that MgSO4 goes complete ionization . (Kb for water is 0.52 k kg/mol)

Posted by Saurabh Baghel 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why only electons transfer to another body but proton not????

Posted by Arpita Sharma 7 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Ambar Mallick 7 years, 7 months ago

Because electron are free to move in an atom proton and neutron are fixed at their mean point in consisting an atom

1Thank You

Rishabh Sahu 7 years, 7 months ago

Protons are more strongly bonded deep inside the nucleus through nuclear forces whereas electrons are less strongly bonded and the most easy way to remove electron is to remove the outermost electrons rather than a nucleon inside the atom.

0Thank You

ANSWER

A solution of sucrose molar mass

Posted by Ashish Raj 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Name the parameters that characterise a unit cell

Posted by Biswajyoti Debnath 7 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Ganesan Chandanapriya 7 years, 7 months ago

The edges a,b,c which may or may not be perpendicular and the angles alpha ( b,c ) beta ( a,c) gama (a,b)

0Thank You

Swati Singh 7 years, 7 months ago

angles and sides

1Thank You

ANSWER

Explain the stability of carbocations

Posted by Loancha Mema 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Ashita Laxami 7 years, 7 months ago

We say a structure of carbocation is stable when it has minimum energy. It depends on 1.+I and -I effect of groups attached to it 2.hyperconjugation 3.resonance effect etc

1Thank You

ANSWER

The solution having minimum boiling pt. is 1).0.1M C6H12O6. 2). 0.1 M CaCl2 3.)0.1M NaCl. (5)0.5M Alcl3

Posted by Divyansi Das 7 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Please suggest an easy way to learn d block elements both lanthanide and actinide series please

Posted by Dharshika As 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Aek Aek 7 years, 7 months ago

Hi dharshika While studying blocks make your own key notes practice periodic table daily Revise blocks atleast once in 3 weeks so that you wont feel any problem while answering them

1Thank You

ANSWER

What are the 15-16 compounds

Posted by Deepak Sharma 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Princesses Kaur 7 years, 7 months ago

15 16 group's compounds

1Thank You

ANSWER

Why the vapour pressure of a solution containing non-volatile solute is less?

Posted by Boss Boss 7 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Raghu Jhawar 7 years, 7 months ago

It is because vapour pressure is due to evaporation phenomena.when non volatile solute is added to pure solvent,some of the solute particles come on the surface so area of evaporation decreses and hence less vapours are formed so vapour pressure reduces.

1Thank You

ANSWER

Why Covlent bond is strong

Posted by Deep Gill 7 years, 7 months ago

CBSE > Class 12 > Chemistry