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Amol Gùpta 6 years, 4 months ago

It changes from 0 to -1 and 0 to +5 ...... When cl2 gas react with hot and conc. NaOH it disproportionate into chloride(Cl^-) and chlorate (ClO3)..... ?✌️✌️ Hope it helps......

Řøhăň Řąjpůť ✌️✊ 6 years, 4 months ago

thanks

Deeya Singh 6 years, 4 months ago

The balanced chemical equation is given below :-> 6NaOH + Cl2 --> 5NaCl + NaClO3 + 3H2O Chlorine changes its oxidation state from 0 to -1 in NaCl and +5 in NaClO3.

ANSWER

How does ammonia react with a solution of Cu^2+

Posted by Prateek Singh 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the difference between rate constant and rate law expression

Posted by Deepanshu Singh 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 6 years, 4 months ago

The rate expression can be defined as an expression in which the rate of reaction is given as the product of the molar concentration of the reactants, with each term raised to some power, which may or may not be the stoichiometric coefficients of the reacting species in a balanced chemical equation.

The rate constant can be defined as the rate of reaction when the concentration of each of the reactant is taken as unity.

Example:

The rate expression for the above reaction can be written as follows:

(Experimentally determined)

Now, if the concentration of NO and O₂ is taken to be unity, then the rate constant is found to be equal to the rate of the reaction.

ANSWER

Why ionic radius of Sb is less than As?

Posted by Harshit Solanki 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Ammonia

Posted by Priya Singh 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Asha Sharma 6 years, 4 months ago

Nh3

ANSWER

Ni(co)4

Posted by Prachi Baliyan 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Harshit Solanki 6 years, 4 months ago

Nickel tetracarbonyl

3Thank You

ANSWER

Write the principal behind the froth flotation process. What is the role of collection in this pricess?

Posted by Siddharth Mavi 6 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Asha Sharma 6 years, 4 months ago

Principle:: selective adsorption Collector prefentially adsorbs sulphide ore from suspension

Nishu Goyal 6 years, 4 months ago

Principle is that ki sulphur ore are soluble in oil while mineral, impurities are soluble in water . It help in concentration of sulphur ore

King Vivekanand Yadav 6 years, 4 months ago

The froth flotation method are used in present of oxygen p

ANSWER

What is aqua regia? Where it is used

Posted by Varsha Singh 6 years, 4 months ago

CBSE > Class 12 > Chemistry

4 answers

Bhawna Pal 6 years, 4 months ago

It is a mixture of hcl and hno3 in the ratio of 3:1 because hno3 is more acidic .it is used by goldsmith for removing oxidised layer of golf

Sunmeet Kaur Sachdeva 6 years, 4 months ago

It. is mixture of Hcl and HNo3. They are in ratio 1:3. It is used by goldsmith to theft the gold from its surface by rubbing it with aquaregia.

Yogita Ingle 6 years, 4 months ago

It is a highly corrosive mixture of acids, a fuming yellow or red solution. The mixture is formed by freshly mixing concentrated nitric acid and hydrochloric acid, optimally in a volume ratio of 1:3. It is used to dissolve gold.

Mohit Rao 6 years, 4 months ago

It is 1:3 mixture of nitric acid and sulphuric acid. And used for silver shining.

ANSWER

What is aqua regia ?where it is used

Posted by Varsha Singh 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Sohan .G 6 years, 4 months ago

It is mixture of conc.HCl & conc.HNO3 in the ratio 3:1 . It can dissolve gold since the mixture is highly corrosive & fuming liquid.

ANSWER

Convert propene to propyne

Posted by Sachin Pandey 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Is there any one who can provide me NOTE'S of chapter biomolecules plz

Posted by Rohit Sheoran 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Is there anyone who can provide me written notes of haloalkenes nd haloarenes.?

Posted by Râhūl ;-),?? 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the blueprint for chemistry class 12th board exam

Posted by Divyansh Jain 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the structure of the nylon 6

Posted by Sandeep Chauhan 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Deepak Sahu 6 years, 4 months ago

NCERT book check kar

ANSWER

what is cainzzaro reation

Posted by Ankit Singh 6 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Yogita Ingle 6 years, 4 months ago

Cannizzaro reaction: Aldehydes having no α-hydrogen atoms undergo self oxidation and reduction (disproportionation) reactions on treatment with a concentrated alkali. In such reactions, one molecule of aldehyde gets oxidised to form an acid and the other molecule of aldehyde gets reduced to form an alcohol.

For example, two molecules of formaldehyde, in the presence of concentrated NaOH, produce methanol and sodium formate.

Sandeep Chauhan 6 years, 4 months ago

What is the structure of the nylon 6

ANSWER

Bond angle

Posted by Paras Omar 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How to make perfect time table for revesion of pre board.....my pre boards are from 16 december and i have to revise the all subjects...so how could i manage

Posted by Riya Moond 6 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Riya Moond 6 years, 4 months ago

And for physics and chemistry

Râhūl ;-),?? 6 years, 4 months ago

Uh have about 15 days nd tha chapter's are 13 so give daily 1 to 2 hour for maths..

ANSWER

Give test to distinguish alkyl halide and aryl halide

Posted by Ijaz Gujjar 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Ujjwal Kapil 6 years, 4 months ago

Aryl halide are aeromatic

ANSWER

Why open structure of glucose cant able to show its property?

Posted by Ijaz Gujjar 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Ijaz Gujjar 6 years, 4 months ago

Due to muta rotation

ANSWER

What is the other name of 16,17$18 group element and why

Posted by Nikhil Pandit 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Vipin Gangwar 6 years, 4 months ago

16,17&18 groups are know as chalcogen, halogen and inert gasses respectively

ANSWER

Why dihalides of p block elements have sp3 hybridization

Posted by Palak Sharma 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How to prepare standard solution of oxalic acid

Posted by Gaurav Raj 6 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Arrange primary,secondary,tertiary methyl amine in increasing order of basic character in aquoes solution

Posted by Itisha Bathla 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Deeya Singh 6 years, 4 months ago

In "aqueous medium" the order of basicity is: 2° methyl amine > 1° methyl amine > 3° methyl amine.

ANSWER

Which of the two components of starch is water soluble

Posted by Himanshu Maurya 6 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Mohammad Eshan 6 years, 4 months ago

amylose is water soluble

Yogita Ingle 6 years, 4 months ago

Starch contains two components: Amylose and Amylopectin. Amylose is the water-soluble component.

ANSWER

Name the process used to convert aromatic amine to diazonium salt.

Posted by Aparna .. 6 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Yogita Ingle 6 years, 4 months ago

Nitrous acid is produced in the reaction mixture by the reaction of sodium nitrite with hydrochloric acid. The conversion of primary aromatic amines into diazonium salts is known as diazotisation.

Sagar Gupta 6 years, 4 months ago

Diazotisation

3Thank You

ANSWER

Important questions asked in boards from last chapter -chemistry in everyday life

Posted by Aditi Yashpal 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Sagar Gupta 6 years, 4 months ago

Mostly definition

ANSWER

Why saccherides are given to diabetes patient though it is sugar???

Posted by Alisha Jajodia 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Meena Sharma 6 years, 4 months ago

Because sacchrine is inert in nature and can excrete from our body through many ways soon without leaving its effect

4Thank You

ANSWER

How to complete all chapters of chemistry in 10 days..

Posted by Riya Moond 6 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Saqib Khan 6 years, 4 months ago

Two units per day

Sagar Gupta 6 years, 4 months ago

You should refer previous year board paper

3Thank You

Abhi Arya 6 years, 4 months ago

Through revision notes

ANSWER

Why ketons do not react with monohydric alcohols

Posted by J N 6 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 4 months ago

Ketones do not react with monohydric alcohols but they usually tends to react with diol i.e polyhydric alcohol. This can be explained on the basis of the stability of the product. The ketones tends to form a cylic ketal with diols which stabilises the product whereas no such cyclic ketal product formation is possible with the monohydric alcohols . Since,e the non-cyclic ketal formed is unstable.

ANSWER

Why acetylation of aniline reduces it's activation effect ?????

Posted by Amol Gùpta 6 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Saqib Khan 6 years, 4 months ago

Due to resonance which reasults stability and decrease reactivity of aniline

Gaurav Seth 6 years, 4 months ago

A n s w e r

Acetylation of aniline reduces the electron density on nitrogen. Resonance results in shifting of an electron pair from nitrogen to carbonyl group. Hence, activation effect reduces. . . . .