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Catalyst change the rate of the reaction.Positive catalyst increase the rate of the reaction while negitive decrease the rate of reaction. (rate means speed of reaction)

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ANSWER

What is the effect of catalyst on the rate of reaction ?

Posted by Aditya Sharma 7 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Pranjal Sehrawat 7 years, 2 months ago

Catalyst 2 trh ke hoote h... Ek to, catalytic promoter and other one is catalytic poision... First one improve catalytic activity eg = Mo in haber's process and other decreases activity of catalyst... Like Co in harber's process

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Parul Maiya 7 years, 2 months ago

Catalyst also decrease the rate of the rxn

2Thank You

Neha Yadav 7 years, 2 months ago

Catalyst increases the rate of a reaction .

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ANSWER

What defect is shown by agcl when it is mixed breed a ucl to

Posted by Aaif Husain 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Pranav Sawant 7 years, 2 months ago

Scottkey

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ANSWER

What is organic chemistry

Posted by Asif Khan 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Divya Pratap Singh 7 years, 2 months ago

Organic chemistry is the branch of chemistry that deals with the carbon compounds (except simple salts such as carbonates, oxides, and carbides).

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ANSWER

how will you convert Toluene to Benzoic acid?

Posted by Amir Suhail 7 years, 2 months ago

CBSE > Class 12 > Chemistry

5 answers

Sachin Ojha 7 years, 2 months ago

Toulene is treated with alklalime kmno4 to form benzoic acid and also cld benzenecarboxlic acid

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G K 7 years, 2 months ago

Oh sorry, u r ry8 aayush, i dont read ur full ans......

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G K 7 years, 2 months ago

Its benzoic acid not benzaldehyde....

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Ayush Parija 7 years, 2 months ago

Another method can be convert toluene to benzaldehyde by etard reaction and then canizzaro reaction reaction and then hydrolysis

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G K 7 years, 2 months ago

Toluene - - - - KMno4, KOH, heat - - - - > Benzene per COOK - - -(H3O+) - - - >Benzoic acid.

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how will you convert ethanol to propanone

Posted by Amir Suhail 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

G K 7 years, 2 months ago

ethanol + KMnO4 - - - (oxidn) - - - >CH3CHO - - - - - grignard reagent(CH3MgBr) - - - - >CH3CH-(OMgBr) CH3 - - - - -(hydrolysis) - - - - > CH3CH-(OH) CH2 + KMnO4 - - - - (oxidn) - - - -> propanone

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ANSWER

Element

Posted by Shivam Shah 5 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Hy Shona 5 years, 8 months ago

Aapka mtlb shivam mein samajhi nhi

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ANSWER

What is the difference between glucose and fructose.?

Posted by Gud Luck ? 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

G K 7 years, 2 months ago

Yes, Swati is ry8...... glucose is an aldohexose, whereas fructose is a ketohexose.......glucose me aldehyde group presnt hota h and glucose in solution forms a 6 atom ring..,... And fructose me ketone group hota h and fructose makes a 5 atom ring.......

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Hy Shona 7 years, 2 months ago

They have different structur but molecular formula is same.i hope i am right ishika

3Thank You

ANSWER

Why does carboxylic acid and aniline does not undergo fridal carft reaction??

Posted by Aayush Kaushal 7 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

G K 7 years, 2 months ago

Since friedel craft catalyst is a Lewis acid (e- deficient) the catalyst (anhyd AlCl3 ) reacts with e- rich COOH group of benzoic acid and gets bonded....... I think ? Friedel Craft r*n with Benzoic acid fails because the Benzene ring is deactivated......

1Thank You

G K 7 years, 2 months ago

Aniline does not undergo Friedel craft's reactions....... because the reagent AlCl3 (the Lewis acid which is used as a catalyst in friedel crafts reaction), being electron deficient acts as a Lewis base. and attacks on the lone pair of nitrogen present in aniline to form an insoluble complex which precipitates out and the reaction does not proceed........

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Princesses Kaur 7 years, 2 months ago

????

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ANSWER

दिव्तीयक ब्यूटिल एलकोहोल का IUPAC नाम

Posted by Ashfak Khan 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Parul Maiya 7 years, 2 months ago

Butane -2- ol???

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ANSWER

Why amorphous solids become crystalline on hearing them at some temperature

Posted by Shubham Kumar 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

G K 7 years, 2 months ago

?Amorphous solid me atom ki arrangement irregular hoti h...... . When we heat it at some temp. and then slowly cooled down it.... Then atom ki arrangement regular ho jaati h...... ?

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ANSWER

Posted by Shubham Kumar 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

G K 7 years, 2 months ago

?...... Amorphous solid r isotropic in nature.... ?It is becoz there is no long range order in them and arrangement is irregular along all directions......Hence same properties are seen? in every direction......

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ANSWER

R-X in the presence of LiAlH4 gives ??? What will be the product of this reaction?

Posted by Stats Sanadi 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Rifat Naaz 7 years, 2 months ago

CH3COoh +4h_ lialh4 h2o+ch3ch2oh

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Abhishek Saini 7 years, 2 months ago

R-X + LiAlH4 –> RH + X-

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ANSWER

Topics that has been deleated from class 12 in physics chemistry biology english and physical education

Posted by Ritu Kumari 5 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Somil Singh 7 years, 2 months ago

Iska matlab kya hoga

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ANSWER

Is there any change in hybridization of B and N atoms as a result of the following reaction BF3+NH3----> F3B.NH3

Posted by Srishti Maurya 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Sachin Ojha 7 years, 2 months ago

No change in hybridization on product side

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Sachin Ojha 7 years, 2 months ago

Yes , hybridization of B is sp2 & N have sp3

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ANSWER

Why transition metal are called transiy

Posted by Zameer Khany 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Rifat Naaz 7 years, 2 months ago

Because d orbital is incomplete

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ANSWER

why ce(+3) is colourless?

Posted by Pooja Yadav 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Which is more acidic alcohol or phenol

Posted by Arpan Das 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Sachin Ojha 7 years, 2 months ago

Hitesh is right phenol is more stable after donating h+ ion

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Hitesh Sumarwal 7 years, 2 months ago

Phenol is more acidic then alcohol

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ANSWER

Why the bond length between c-cl is shorter than that of in chain

Posted by Anubhav Agrawal 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjana Sherawat 7 years, 2 months ago

Small size of atoms

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ANSWER

Why NH3 ki more stable than pcl5?

Posted by Ayush Gupta 7 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Shreya Saini 7 years, 2 months ago

I would like to contradict this. Actually, it is due to repulsions caused by Cl groups attached to P atom in PCl5 among each other, though stable in its TBP geometry. In contrast, NH3 is more stable with no such steric hindrance in its sp3 hybridisation with trigonal pyramidal shape.

3Thank You

Sahood Khan 7 years, 2 months ago

Bcz NH3 Ki is highly electronegative than PCl5

2Thank You

Pankaj Negi 7 years, 2 months ago

b/c it is highly electronegative than pcl5

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ANSWER

Name the compound that is used along with aluminium for joining railway track

Posted by Momena Momtaz 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Somil Singh 7 years, 2 months ago

Fe2o3

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Shreya Saini 7 years, 2 months ago

Fe2O3

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ANSWER

Why does physisorption decrease with increase of temperature?

Posted by Somil Singh 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Ashok Singh 7 years, 2 months ago

Due to exothermic reaction

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ANSWER

Define giant molecule

Posted by Somil Singh 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Ashok Singh 7 years, 2 months ago

Bigger size molecule

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ANSWER

2- bromopropane undergoes dehydrohalogenation reaction

Posted by Somil Singh 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Dikshit Solanki 4 years, 10 months ago

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ANSWER

Structure of mer-triamminetri chlorocobalt 3

Posted by Farah Khan 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

anybody please tell me +R & -R effects in simple language??? Also tell +I & -I effects?????

Posted by Rohan Khokhar 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Rohan Khokhar 7 years, 2 months ago

I effect also

0Thank You

Abhinesh Tiwari 7 years, 2 months ago

When transfer of electron away from the group and towards the conjugated system that is called +R effect.that is activate benzene nucleous for electrophilic substitution reaction at ortho and para position

And when tranfer of electron towards the group and away from the conjugated system is called -R effect

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How we can identify the value of a,b,c and ,d if we have only compound structure

Posted by Mohit Saroha 7 years, 2 months ago

CBSE > Class 12 > Chemistry