Chemistry-
General
Easy
Question
The correct reactivity order of alcohols towards H–X will be
I) 
II) 
III) 
IV) 
- II > I > III > IV
- IV > III > II > I
- II > IV > I > III
- II > IV > III > I
The correct answer is: II > IV > III > I
Related Questions to study
chemistry-
For the reaction
For the reaction
chemistry-General
chemistry-
Alcohols undergo acid catalysed elimination reactions to produce alkenes. Because water is lost in the elimination, this reaction is called dehydration reaction. Secondary and tertiary alcohols always give E1 reaction in dehydration. Primary alcohols whose b-carbon is branched also give E1 reaction. The reactivity of alcohol for elimination reaction is tertiary alcohol > Secondary alcohol > Primary alcoholc
Identify the product in the given reaction
Alcohols undergo acid catalysed elimination reactions to produce alkenes. Because water is lost in the elimination, this reaction is called dehydration reaction. Secondary and tertiary alcohols always give E1 reaction in dehydration. Primary alcohols whose b-carbon is branched also give E1 reaction. The reactivity of alcohol for elimination reaction is tertiary alcohol > Secondary alcohol > Primary alcoholc
Identify the product in the given reaction
chemistry-General
chemistry-
What are the products of the following reaction ?
What are the products of the following reaction ?
chemistry-General
chemistry-
Write the product of the following reaction
Write the product of the following reaction
chemistry-General
chemistry-
Which of the following is not expected to be intermediate of the following reaction ?
Which of the following is not expected to be intermediate of the following reaction ?
chemistry-General
chemistry-
The products formed in the reaction are :
The products formed in the reaction are :
chemistry-General
chemistry-
The final product (IV) in the sequence of reactions is :
The final product (IV) in the sequence of reactions is :
chemistry-General
chemistry-
The product of the reaction given below is :
The product of the reaction given below is :
chemistry-General
physics-
In the figure shown the potential drop across the series resistor is
In the figure shown the potential drop across the series resistor is
physics-General
physics-
The maximum and minimum values of zener diode current are
The maximum and minimum values of zener diode current are
physics-General
physics-
The resistance of the diode in forward bias and infinity in the reverse 
condition is 20 biased condition. The current in the circuit is
The resistance of the diode in forward bias and infinity in the reverse condition is 20 biased condition. The current in the circuit is
physics-General
physics-
In the figure shown, current passing through the diode is .
In the figure shown, current passing through the diode is .
physics-General
General
Find the value of p. Leave your answer in simplest radical form.
For such questions, we should know the properties of different triangles.
Find the value of p. Leave your answer in simplest radical form.
GeneralGeneral
For such questions, we should know the properties of different triangles.
chemistry-
The decreasing order of nucleophilicity among the nucleophiles :
A) 
B) 
C) 
D) 
The decreasing order of nucleophilicity among the nucleophiles :
A)
B)
C)
D)
chemistry-General
chemistry-
Phenols are converted into their salts by aqueous NaOH but not by aqueous bicarbonates. The salts are converted into the free phenols by aqueous mineral acids, carboxylic acid or carbonic acids. Most phenols have Ka value of about 10–10, and are tremendously more acidic than alcohols. The difference in acidity are due to difference in stabilities of reactants and products. Phenol and phenoxide ions contain benzene ring and therefore must be hybrid of Kekuley structures
Being basic, oxygen can share more than a pair of electron with the ring
Since energy must be supplied to separate opposite charge, the structure of phenols should contain more energy. The net effect of resonance is therefore to stabilise the phenoxide ion to a greater extent than the phenol and thus to shift the equilibrium towards ionization and make Ka larger than for an alcohol.
Consider the following curves :
Phenols are converted into their salts by aqueous NaOH but not by aqueous bicarbonates. The salts are converted into the free phenols by aqueous mineral acids, carboxylic acid or carbonic acids. Most phenols have Ka value of about 10–10, and are tremendously more acidic than alcohols. The difference in acidity are due to difference in stabilities of reactants and products. Phenol and phenoxide ions contain benzene ring and therefore must be hybrid of Kekuley structures
Being basic, oxygen can share more than a pair of electron with the ring
Since energy must be supplied to separate opposite charge, the structure of phenols should contain more energy. The net effect of resonance is therefore to stabilise the phenoxide ion to a greater extent than the phenol and thus to shift the equilibrium towards ionization and make Ka larger than for an alcohol.
Consider the following curves :
chemistry-General
