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85701.

Acetic acid when heated (300^(@)C) with MnO gives

Answer»

formaldehyde
acetaldehyde
acetone
butanone

Answer :C
85702.

Acetic acid vapours when passed over aluminium phosphate forms:

Answer»

`CH_3CHO`
KETENE
`C_2H_6`
`C_2H_4`

ANSWER :B
85703.

Acetic acid undergoes dehydration on heating with P_(2)O_(5) to form

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`CH_(3)COOCH_(3)`
`CH_(3)OH`
`(CH_(3)CO)_(2)O`
NONE of the above

Answer :C
85704.

Acetic acid vapourswhen passed over aluminium phosphate forms

Answer»

`C_2H_4`
`CH_3CHO`
`C_2H_6`
KETENES

ANSWER :D
85705.

Acetic acid to ethanol

Answer»

Solution :Acetic ACID to ethanol:
`underset("acetic acid")(CH_(3)-OVERSET(O)overset("||")("C")-OH)underset("(ii)"H_(3)O^(+))overset("(i)"LiAlH_(4))rarrunderset("Ethanol")(CH_(3))-CH_(2)-OH`
85706.

Acetic acid shows a molecular mass of 120 when dissolved in benzene. This is because of

Answer»

SOLVATION process
Intermolecular H-bonding
Presence of H ATOM at `ALPHA` C
Dimerisation

Answer :D
85707.

Acetic acid reacts with PCl_(3)to give

Answer»

`CH_(3)-overset(O)overset(||)(C)-OPCl_(2)`
`CH_(3)overset(O"")overset(||"")(COCl)`
`CH_(3)overset(O"")overset(||"")(C Cl)`
`ClCH_(2)overset(O)overset(||)(C)-OH`

Solution :`CH_(3)COOHoverset(PCl_(3))toCH_(3)COCl`
85708.

Acetic acid reacts with chlorine in the presence of catalyst, anhydrous FeCl_(3) to give:

Answer»

acetyl chloride
methyl chloride
TRICHLOROACETIC ACID
CHLORAL HYDRATE

Answer :C
85709.

Acetic acid react with PCl_(5) gives ,

Answer»

`CH_(3)COCl`
`ClCH_(2)CH_(2)CL`
`CH_(3)COOCl`
`CH_(3)C L`

Solution :`CH_(3) COOH + PCl_(5) to CH_(3)COCl + POCl_(3) + HCL`
85710.

Acetic acid on warming withhydrazoic acid in presence of conc. H_2SO_4 gives:

Answer»

`CH_3CONH_2`
`CH_3NH_2`
`CH_3COONH_4`
`CH_3CH_2NH_2`

ANSWER :B
85711.

Acetic acid on heating with urea gives :

Answer»

ACETAMIDE , carbon DIOXIDE and AMMONIA
AMMONIUM CARBONATE and carbon
Ammoniumacetate , acetamide and carbon dioxide
None of these

Answer :A
85712.

Acetic acid on dissolution in benzene will show:

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TWO TIMES of its NORMAL MOLECULAR weight
Its normal molecular weight
Half of its normal molecular weight
None

Answer :A
85713.

Acetic acid on dissolution in benzene will show

Answer»

half of its NORMAL molecular MASS
its normal molecular mass
two TIME of its normal molecular mass
none

Solution :A CETIC acid dimerises in BENZENE.
85714.

Acetic acid mixing with _____gives buffer solution.

Answer»


ANSWER :SODIUM ACETATE
85715.

Which one of the following compounds liberates CO_(2) from aqueous NaHCO_(3) ?

Answer»

Na
Zn
`NaHCO_(3)`
`NAOH`

ANSWER :C
85716.

Acetic acid liberates CO_2gas with

Answer»

NA
ZN
`NaHCO_3`
`NAOH`

ANSWER :C
85717.

Acetic acid is weak acid than sulphuric acid because

Answer»

It decompose on increasing temperature
It has LESS degree of ionisation
It has -COOH group
None of these

Solution :`CH_(3)COOH` is slightly ionised than `H_(2)SO_(4)`.
85718.

Acetic acid is treateed with Ca(OH)_(2) and the product so obtained is subjected to dry distillation. The final products is

Answer»

propanal
ethanol
ethanal
propanal

Solution :
85719.

Acetic acid is treated with metallic Sodium to form Hydrogen and X . When X is treated with Sodalime , Y and Sodium Carbonate are formed 'Y' is

Answer»

`C_(2) H_(6)`
`CH_(4)`
`CH_(5) COONa`
`CH_(3) CONH_(2)`

Answer :B
85720.

Acetic acid is treated with Ca(OH)_(2) and the product so obtained is subjected to dry distillation . The final product is :

Answer»

propanone
ethanal
ethanol
propanal

ANSWER :A
85721.

Acetic acid is treated with Ca(OH)_2 and the product so obtained is subjected to dry distillation. The final product is

Answer»

propanal
ETHANOL
ETHANAL
propanone

Solution :`2CH_(3)COOH +Ca(OH)_(2) to UNDERSET ("calcium acetate ")( (CH_(3)COO) _(2)Ca ) + 2H_(2)O `
85722.

Acetic acid is removed from pyroligneous acid by the passing it in-

Answer»

`AL(OH)_(3)` SOLUTION
`Ba(OH)_(2)` solution
`Ca(OH)_(2)` solution
Ethanol

Answer :C
85723.

Acetic acid is obtained when

Answer»

METHYL alcohol is oxidised with potassium permanganate
Calcium acetate is DISTILLED in the presence of calcium FORMATE
acetaldehyde is oxidised with potassium dichromateand sulphuric ACID
glycerol is heated with sulphuric acid.

Answer :C
85724.

Acetic acid is obtained when :

Answer»

glycerol is heated with conc . `H_(2)SO_(4)`
acetaldehyde is oxidised with `K_(2)Cr_(2)O_(7)andH_(2)SO_(4)`
calcium ACETATE is distilled in the presence of calcium formate
methyl alcohol is oxidised with `KMnO_(4) andH_(2)SO_(4)`.

Answer :B
85725.

Acetic acid is obtained from ethyl alcohol by the process of :

Answer»

Distillation
Reduction
Fermentation
Dehydration

Answer :C
85726.

Acetic acid is obtained by the strong oxidation of:

Answer»

ETHYL acetate
ethyl METHYL ketone
ethyl alcohol
dimethyl ketone

ANSWER :B::C::D
85727.

Acetic acid is manufactured by the fermentation of

Answer»

Ethanol
Methanol
Ethanal
Methanal

Solution :`C_(2)H_(5)OH OVERSET("ACETOBACTER")toCH_(3)COOH`
85728.

Acetic acid Is manufactured by the fermentation of :

Answer»

ETHANOL
Methanol
Ethanal
Methanal

Answer :A
85729.

Acetic acid is dissolved in water having oxygen as ""^(18)OHowmany ""^(18)Oatom will be present in the product molecule?

Answer»


SOLUTION :
85730.

Acetic acid is converted to chloroacetic acid using

Answer»

<P>`PCl_(5)`
`PCl_(3)`
`Cl_(2) , NAOH`
`Cl_(2) , (P_(4))_(N)`

Answer :D
85731.

Acetic acid is added while preparing a standard solution of CuSO_4. 5H_2O to prevent :

Answer»

Hydration
Reduction
Hydrolysis
Complex formation

Answer :C
85732.

Acetic acid is a weak electrolyte because

Answer»

Its MOLECULAR weight is high
It is COVALENT compound
It does not dissociate and much or its IONIZATION is very LESS
It is highly UNSTABLE

Solution :It is a weak electrolyte because it's ionization is very less.
85733.

Acetic acid is a weaker acid than chloroacetic acid. Give reasons.

Answer»

Solution :Due to +I EFFECT of `-CH_(3)` GROUP, the carboxylate ion gets STABILIZED.
Due to -I effec of -Cl group, the caboxylate ion gets stabilized
Or
`-CH_(3)` group is an elecrtron RELEASING group -Cl is an electron WITHDRAWING.
OR
due to +I effect of `_CH_(3)` group
due to -I - effect of -Cl
85734.

Acetic acid has K_a=1.8xx10^(-5) while formic acid has K_(a)=2.1xx10^(-4).What would be the magnitude of the emf of the cell Pt(H_(2))|0.1 M acetic acid+ 0.1 M sodium acetate ||0.1 M formic acid + 0.1 M sodium formate|Pt(H_(2)) at 25^(@)C ?

Answer»

0.032 volt
0.063 volt
0.0456 volt
0.055 volt

Solution :Reaction is `H_C^+ overset(1e^(-))to H_A^+`
`therefore E=(0.059)/1 "LOG" (2.1xx10^(-4))/(1.8xx10^(-5))=0.0629 V=0.063 V`
85735.

Acetic acid has a molecular mass of 120 when dissolved in benzene. Why?

Answer»

SOLUTION : Due to its existence in the FORM of a dimer, acetic acid has a MOLECULAR weight of 120 in non-aqueous solutions, a solvent LIKE BENZENE.
85736.

Acetic acid gives acetic anhydride when treated with

Answer»

`PCl_(5)`
`P_(2) O_(5)`
`Cl_(2) //P`
`Na`

ANSWER :B
85737.

Acetic acidfomsacetyl chloridewith.

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`PCl_(5)`
`PCl_(3)`
`SOCl_(2)`
`COCl_(2)`

ANSWER :A::B::C
85738.

Acetic acid exist in dimer state in benzene due to

Answer»

CONDENSATION reaction
Hydrogen bonding
Presence of CARBONYL group
Strong POLAR nature

Answer :B
85739.

Acetic acid exist asa dimer in benzene solution. This is due to

Answer»

Condensation
Presence of -COOH group
Presence of `ALPHA`-hydrogen
Hydrogen bonding

Solution :
85740.

Acetic acid (ethanoic acid) and hydrochloric acid react withh KOH solution. The enthalpy of neutralization of ethanoic acid is -55.8 kJ mol^(-1) while that of hydrochloric acid is -57.3 kJmol^(-1). Can you think of how are these different?

Answer»

Solution :Enthalpy of neutralization for HCl `=-57.3 kJ MOL^(-1)`.
Enthalpy of neutralization for `CH_(3)COOH = -55.8 kJ mol^(-1)`
In case of neutralization of `CH_(3)COOH`, the part of heat released `[-55.8 - (-57.3) = + 1.5 kJ]` is used up in dissociation of acetic acid and thus heat GIVES out is LESSER than 57.3 kJ.
85741.

Acetic acid dimerises in benzene during the determination of the freezingpoint, the molecularweight of acetic acid is found to be 108 . Then the degree of association of acetic acid in benzene during this experiment is

Answer»

`89%`
`76%`
`44.5%`
`67.3%`

ANSWER :A
85742.

Acetic acid can be used A) For curing meat and fish B) As vinegar in cooking C) In the preparation of perfumes

Answer»

Only A
Only B
Only C
All

ANSWER :D
85743.

Acetic acid can be used

Answer»

For CURING MEAT and fish
As vinegar in cooking
In the PREPARATION of perfumes
All

Answer :D
85744.

Acetic acid can be reduced by LiAlH_(4) to :

Answer»

ACETALDEHYDE
actone
ethyl alcohol
ethane.

Answer :C
85745.

Acetic acid and propanoic acid have K_(a) value 1.75xx10^(-5) and 1.3xx10^(-5) respectively at a certain temperature. An equimolar solution of a mixture of the two acids is partially neutralised by NaOH . How is the ratio of the contents of acetate and propionate ions related to the K_(a) values and the molarity?

Answer»

`((alpha)/(1-alpha))=(1.75)/(1.3)xx((beta)/(1-beta))` , where `alpha` (acetic ACID) and `beta` (propanic acid) are ionised fractions of their ACIDS.
the RATIO is underlated to the `K_(a)` values
The ratio is UNRELATED to the molarity of acid.
The ratio is unrelated to the pH of the SOLUTION.

Answer :a,c,d
85746.

Acetic acid and propionic acid have K_a value 1.75xx10^(-5) and 1.3xx10^(-5) respectively at a certain temperature. An equimolar solution of a mixture of the two acid is partially neutralised by NaOH. How is the ratio of the contents of acetate and proponate ions related to the K_a value and the molarity ?

Answer»

ionisation FRACTION of acids
The RATIO is UNRELATED to the `K_a` values
The ratio is unrelated to the molaity
The ratio is unrelated to the PH of the solution

Answer :A
85747.

Acetic acid can be halogenated in presence of phosphorus and chlorine. Formic acid cannot be halogenated with same way because of

Answer»

presence of `ALPHA`- H atom in formic acid
presence of `alpha`- H atom in ACETIC acid
absence of `alpha` - H atom in `CH_(3)COOH`
HIGHER acidic STRENGTH of acetic acid than formic acid.

Answer :B
85748.

Acetic acid and n-propyl alcohols has same molecular mass (60). Out of these two, which have higher B.P.

Answer»

Acetic acid
n-propyl ALCOHOL
either
neither

Solution :Acetic acid exist as cyclic dimer due to INTERMOLECULAR hydrogen BONDING which requires high energy than hydrogen bonding present in alcohols.
85749.

Acetic acid and CH_(3)OH are obtained on large scale by destructive distillation of

Answer»

Wood
coal
Turpentine
Crude oil

Solution :Wood `underset("distillation")OVERSET("DESTRUCTIVE")to ` Wood gas + TAR + CHARCOAL `+ underset("(woodalcohol)")(CH_(3)OH) + underset("(vinegar)")(CH_(3)COOH)`
85750.

Acetic acid and methanol are obtained on a large scale by destructive distillation of :

Answer»

Wood
Coal
Turpentine OIL
`CH_3COOH`

ANSWER :A