In case of carboxylic acids the negative charge is on the more electronegative element that is oxygen as shown in the structure in both of the resonating structures. The negative charge on the more electronegative element makes it more stable. And thus it shows acidic character easily. But in case of phenols the negative chargeContinue reading “Why Carboxylic Acids are more acidic than phenols ?”
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Why is Krypton larger in size than bromine,even if atomic radius decreases while going from left to right across a period?
the atomic size of Krypton is larger than Bromine.
Why the electron affinity or electron gain enthalpy of Chlorine is higher than Fluorine ? Even if Fluorine is most electronegative element.
chlorine shows exceptionally higher electron gain enthalpy than that of florine.
Why ortho-nitrophenol is more acidic than ortho-methoxy phenol ?
To answer this we have to see the reactive nature of phenol and the substituents attached to it. Acidic behavior of phenol depends on the fact that how easily it can loose a proton and make phenoxide ion which is stabilized by resonance. The methoxy group being electron donating group increases the electron density ofContinue reading “Why ortho-nitrophenol is more acidic than ortho-methoxy phenol ?”
Why sigma bond is stronger than pi bond?
Actually the sigma bond involves head to head overlapping of orbitals, due to which the overlapping takes place on a larger extent. That makes the bond more stronger as compared to pie bond. In pie bond there is a sidewise overlapping of orbitals which leads to lesser extent of overlapping and thus the bond formedContinue reading “Why sigma bond is stronger than pi bond?”
Why is breaking of C-H bond given more preference over C-C bond though the bond energy of the latter is less than the first one?
In case of hydrocarbons , the c-c bond is normally safe due to following two reasons :- Difference between the electronegativity of Carbon and Hydrogen. Due to this reason the electrons of the shared pair stays closer to the C-atom which makes it easy to break the C-H bond and release hydrogen as hydronium ionContinue reading “Why is breaking of C-H bond given more preference over C-C bond though the bond energy of the latter is less than the first one?”
WHY THE IONIC REACTIONS ARE FASTER?
How are reactions related to chemical bonds? The type of bond has a great effect on the rate of reaction or speed of reaction. Here we are going to discuss why and how it happens, First of all in case of ionic compounds:- Lets take example of Sodium hydroxide and Hydrochloric acid NaOH (aq) +Continue reading “WHY THE IONIC REACTIONS ARE FASTER?”
Bond angles of PF3 and PCl3
In case of PF3 the size of F is small and thus it approaches near to the central atom that is P. as it approaches near to P there comes the repulsion between the bond pairs, which widens the bond angle and makes it larger than in case of PCl3. Here two types of forcesContinue reading “Bond angles of PF3 and PCl3”
Why are ion-dipole attractions stronger than dipole-dipole attractions?
See the ion is a proper charged particle, but dipole is a neutral olecule which is having polarity in it . the dipole is having temporary charge where as the ion is having a permanent charge. Now lets see the cases Case 1 :- Ion – dipole attraction Here a permanent ion is attracting aContinue reading “Why are ion-dipole attractions stronger than dipole-dipole attractions?”
Why is a Cl-Cl bond stronger than an F-F bond?
This is due to the following two major reasons :- The fluorine atoms are very small in size . The florine element is having the highest electronegativity. Due to these two reasons the florine atoms are so near after the F-F bonding that the start repelling each other due to higher electron desity, which makesContinue reading “Why is a Cl-Cl bond stronger than an F-F bond?”
Why methanoic acid is stronger than ethanoic acid?
In case of methanoic acid the carbon atom joined to the carboxyl group is attached to only hydrogen atoms which are not able to increase the electron density. HCOOH But in case of ethanoic acid we have a methyl group attached to the carbon of carboxyl group , which is electron releasing group and itContinue reading “Why methanoic acid is stronger than ethanoic acid?”
Why is water more acidic than alcohol?
THE ANSWER CAN BE UNDERSTOOD EASILY BY LOOKING AT THE FOLLOWING POINTS:- 1. In case of alcohol the Oxygen atom is joined to the alkyl group on one side and hydrogen atom on the other side, being electron releasing in nature the alkyl group increase the electron density on Oxygen atom , thus making itContinue reading “Why is water more acidic than alcohol?”
Why Alkynes are less reactive than alkenes and alkanes towards electrophilic addition reaction ?
There are two reasons for less reactivity of Alkynes towards electrophillic addition reactions:- Due to greater electronegativity of sp-hybridized carbon atoms of a triple bond than sp2 -hybridized carbon atoms of a double bond, pie-electrons of alkynes are more tightly held by the carbon atoms than pie electrons of alkenes and hence are less easilyContinue reading “Why Alkynes are less reactive than alkenes and alkanes towards electrophilic addition reaction ?”
The Unconditional Guru 