Recently Active Chemistry Questions

A certain quantity of an organic liquid (mol. wt. 85) was introduced into an air filled flask of volume 6.5 L and sealed at Temperature of 17 degrees C and 760 mm og Hg . The flask was heated to a temperature of 307 degrees C ...

How do we find out whether a particular compound is better oxidising/reducing agent in alkaline or acidic medium? for eg , SO2 is more powerful reducing agent in an alkaline medium than in acidic medium. how do we know this ? ...

What is the n-factor of H2O2 in the reaction : 2H2O2 → 2H2O + O2 Please explain ...

1)Something that isn't consumed by the reaction (so say A) is dissolved at the same time as something that is consumed by the reaction (B) in a solvent, so that they are in the same phase...what is this reaction an example of ...

Well, I know that teflon is used for making non stick surfaces by exploiting it properties of CF2 Bond. But How? ...

Please can some one explain tautomerism in simple manner........and post some questions based on it. tHANKS ...

What are the products obtained when meta bromo touluidene is treated with KNH2 in liquid NH3? ans- I have a confusion. Acc. to me it should depend on the structure given- *Image* and *Image* Which one is possible and why? ...

What is the condition for an aryl halide to undergo N.S. by benzyne mechanism? I read that those aryl halides which are either deactivated or unactivated undergo this mechanism.Deactivated are those where an EWG is present at ...

which has greater b.p acetone or butanone.... plz give me the reason.... ...

*Image* plz help me in this..... ...

This is the story about how Augustus Kekule had come to the structure of benzene. This is the only part of organic chemistry that I like........no...not the reactions and properties of benzene.........I only like the way Keku ...

Q1)For detection of hydrogen and carbon in compounds why do we take Cuo three times the weight of the organic compound? Q2)What decides how many parts of compound are to be reacted with how many parts of reagent. Q3)the given ...

In the given isomers of pentane why only fig 1, fig 3, and fig 4 will be considered i.e., pentane, 2-methylbutane and 2,2-dimethylpropane why not fig 2 and fig 5 please tell me. I am much confused....?????????????????????? *I ...

I really need help with questions like these. 24cm3 of a mixture of methane and ethane were exploded with 90cm3 of oxygen. After cooling to room temperature, the volume of gas was noted. It was found to decrease by 32cm3 when ...

1)What is the difference between phenanthrene and anthracene?Their structures are quite similar 2)why are double bonds are stronger and shorter than single bonds? 3)Is the bond angle in methyl anion 109.5.?If so why is it dif ...

frndz say the reason why the taoutomer for the following is the 2nd one?? *Image* but generally it shld be taken from alpha carbon but this differrent but y?? ...

in case of positive adsorption there are unbalanced forces on the surface which causes the phenomenon but why does negative adsorption take place? ...

1) The half-time of first order decomposition of nitramide is 2.1hr at 15°C NH2NO2(aq) → N2O(g) + H2O(l) If 6.2g of NH2NO2 is allowed to decompose, calculate a) time taken for NH2NO2 to decompose 99%. b) volume of dry N2O ...

Given that the radius of Mg2+ , O2- , S2- are 0.65A , 1.41A, 1.84A respectively. what will be the co-ordinaion no. of Mg2+ in MgO and MgS respectively. y isn't the ans same????? ...

give an example of compounds which r superimposable but not mirror images of each other. ...

A 1st order reacn with half life 20 days is cccuring at 27°C . If 10-2 % molecules r in activated state . Find the maximum rate constant. (A) 3.4 * 10-2 (B) 3.4 * 102 (C) 10-4 (D) can't be determined ...

NO3- , CO32- , and SO3 are isoelectronic but only first two are isostructural. WHY??? EXPLAIN...... ...

In which of the following solutions effect of dilution will not take place?? (A) 100 ml 0.1 M CH3COOH with 50 ml 0.1 M NaOH (B) 100 ml 0.1 M CH3COOH with 100 ml 0.1 M NaOH (C) 100 ml 0.1 M CH3COOH with 50 ml 0.1 M NH4OH (D) 1 ...

1)Which one is a stronger acid- o- Toluic acid or p- Toluic acid? 2)Why is ortho nitro aniline less basic than para nitro aniline? ans1) I think its p- Toluic acid because o- Toluic acid has more +I effect than p- Toluic acid ...

balance the reactions: (i) SO2 + Na2CrO4 + H2SO4 → Na2SO4 + Cr2(SO4)3 +H2O (ii) C2H5OH + I2 + OH- → CHI3 + HCO2- + H2O + I- I am facing the same problem in both the reactions for eg taking (i) reaction step I S4+ → S6+ ...

1.in geometrical isomers,why boiling point is directly proportional to dipole moment? and why melting point directly proportional to intermolecular area of contact? 2. *Image* i understand that the above compounds are dissyme ...

*Image* ...

1) Can SN1 reaction take place with E2 ? If yes, then when and why ? 2)What would be the effect of increasing solvent polarity on the rate of the given substitution reaction:- R------L+ → R+ + :L 3)Why phenyl halide is unre ...

Some things I found in Solomons which explain the mechanism of benzyne substitution.. *Image* *Image* So I was right initially about stability of carbanions. ...

only problems not theory! ...