Chemical Properties of Ethers

Q. 1) - Draw the structures of major monohalo products in each of the following reactions:


2) - Draw the structures of major monohalo products in each of the following reactions:


3) - Draw the structures of major monohalo products in each of the following reactions:


4) - Draw the structures of major monohalo products in each of the following reactions:


5) - Draw the structures of major monohalo products in each of the following reactions:


6) - Draw the structures of major monohalo products in each of the following reactions:

Q. 1) - Predict the order of reactivity of the following compounds in $S_{N}1\text{and}{S}_{N}2$ reactions:

A) - The four isomeric bromobutanes

2) - Predict the order of reactivity of the following compounds in $S_{N}1\text{and}{S}_{N}2$ reactions:

B) - $C_6{H}_{5}C{H}_{2}Br,C_6{H}_{5}CH\left(C_6{H}_5\right)Br,C_6{H}_{5}CH\left(C{H}_3\right)Br,C_6{H}_{5}C\left(C{H}_3\right)\left(C_6{H}_5\right)Br$

Q. Mechanism for reduction of benzoic acid using LiAlH4

Q.

Calculate the ph of 0.005M h2so4 solution ?

Q.

Complete the following reaction and balance it:

${\mathrm{K}}_2\mathrm{O}+{\mathrm{H}}_2\mathrm{O}\to$

Q.

Write the reaction of ethene with chlorine.

Q.

Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour.

Q. Among the following compounds the least basic compound is:
$C_3{H}_{7}N{H}_2,N{H}_3,C{H}_{3}N{H}_2$ and $C_6{H}_{5}N{H}_2$

1. $C_3{H}_{7}N{H}_2$
2. $N{H}_3$
3. $C{H}_{3}N{H}_2$
4. $C_6{H}_{5}N{H}_2$

Q.

1. C₆H₅OCH₃ and H₂

2. C₆H₅Br and CH₃Br

3. C₆H₅Br and CH₃OH

4. C₆H₅OH and CH₃Br

Q. 23. NH3+H2O gives NH4+ + OH- Is here NH3 is Arrhenius acid or Arrhenius base. Exlain in detail.

Q. A reaction between ammonia and boron trifluoride is given below: $N{H}_3+B{F}_3\to H_{3}N:B{F}_3$ Identify the acid and base in this reaction. Which theory explains it? What is the hybridization of $B$ and $N$ in the reactants?

Q. The major product formed in the following reaction is

1. 
2. 
3. 
4. 

Q.

The ether that undergoes electrophilic substitution reactions is:

1. CH₃OC₂H₅

2. C₆H₅OCH₃

3. C₂H₅OC₂H₅

4. CH₃OCH₃

Q.

Assertion: Oxidation number of carbon in ${\mathrm{CH}}_2\mathrm{O}$ is zero.

Reason: ${\mathrm{CH}}_2\mathrm{O}$ (formaldehyde), is a covalent compound.

1. Assertion is true, but Reason is false.

2. Both Assertion and Reason are false.

3. Both Assertion and Reason are true. The reason is the correct explanation of Assertion.

4. Both Assertion and Reason are true. The reason is not the correct explanation of Assertion.

Q.

Give the balanced chemical equations for the reaction of dilute sulphuric acid with:

${\mathrm{NaHCO}}_3$

Q.

The reactivity order of halogen acids with ethers is

1. HI > HBr> HCl

2. HBr > HI> HCl

3. HCl > HBr> HI

4. HBr > HCl> HI

Q.

In a pseudo first order hydrolysis of ester in water, the following results were obtained:

t/s	0	30	60	90
[Ester]mol L−1	0.55	0.31	0.17	0.085

(i) Calculate the average rate of reaction between the time interval 30 to 60 seconds.

(ii) Calculate the pseudo first order rate constant for the hydrolysis of ester.

Q.

Which of the following compounds is resistant to nucleophilic attack by hydroxyl ions?

1. Acetonitrile

2. Acetamide

3. Methyl acetate

4. Diethyl ether

Q. Major product in Friedel-Craft's acylation of anisole is:-

1. 3-Methoxy-acetophenone.
2. 4-Methoxy-acetophenone
3. 4-Chloro-1-methoxy benzene
4. Chlorobenzene

Q.

Is an ether soluble in water?

Q.

Write the balanced equation for the following reaction.

Action Hydrochloric acid ($\mathbf{HCl}$) on Sodium sulfide.

Q.

Ethane is obtained by the action of Sodium on two molecules of the compound ‘B’. Write the name of ‘B’, the equation of reaction and also the name of the reaction?

Q.

Write the mechanism of the reaction of HI with methoxymethane.

Q.

Convert ethanol to propanal

Q. The heat of combustion of solid benzoic acid at constant volume is -3 21.30 Kilo joules at 27 degree centigrade .The heat of combustion at constant pressure is-?

Q.

Balance the following chemical equation:

$\mathrm{BeO}+\mathrm{NaOH}\to {\mathrm{Na}}_2{\mathrm{BeO}}_2+{\mathrm{H}}_2\mathrm{O}$

Q. Find the major product in the following reaction.
$C{H}_3-\stackrel{O}{\stackrel{||}{C}}H\underset{Conc.HCl}{\overset{Zn-Hg}{\to }}$

1. $C{H}_3-C{H}_2-OH$
2. $C{H}_3-C{H}_3$
3. $C{H}_3-O-C{H}_3$
4. $C{H}_3-COOH$

Q.

When diethyl ether is treated with excess of Cl₂ in presence of sunlight, then the product formed is

1. CH₃CHCl-O-CHClCH₃

2. CCl₃CCl₂-O-CCl₂CCl₃

3. CCl₃CH₂-O-CH₂CCl₃

4. CH₃CHCl-O-CH₂CH₃

Q.

Which is stronger $\mathrm{HClO}\mathrm{or}{\mathrm{HClO}}_2$?

Q. Ethers have lower boiling point than their corresponding isomer alcohols because of?

1. Hydrogen bonding in alcohols that is absent in ether
2. Hydrogen bonding in ether
3. Insolubility of ether in water
4. Inertness of ethers as compared gto alcohols