Acidity of Carboxylic Acids

Q. When phenol is reacted with $CHC{l}_3$ and $NaOH$ followed by acidification, salicylaldehyde is obtained. Which of the following species is involved in the above mentioned reaction as an intermediate?

1. 
2. 
3. 
4. 

Q.

The treatment of alkyl chlorides with aqueous KOH leads to the formation of

alcohols but in the presence of alcoholic KOH, alkenes are major products. Explain.

Q. Which of the following has the lowest $p{K}_a$ value?

1. $C{l}_{3}CCOOH$
2. $C{H}_3-COOH$
3. $ClC{H}_{2}COOH$
4. $CHC{l}_{2}COOH$

Q. Which one is strongest acid

1. $CHC{l}_{2}COOH$
2. $CH{F}_{2}COOH$
3. $C{H}_{2}FCOOH$
4. $C{H}_{2}ClCOOH$

Q. When benzyl alcohol is oxidised with $KMn{O}_4$, the product obtained is:

1. Benzaldehyde
2. Benzoic acid
3. $C{O}_2\text{and}{H}_{2}O$
4. Benzophenone

Q. Arrange increasing order of acidic strength of following dicarboxylic acid.
(i) Oxalic acid
(ii) Succinic acid
(iii) Malonic acid
(iv) Adipic acid

1. iii < ii < i < iv
2. i < ii < iii < iv
3. iv < iii < ii < i
4. iv < ii < iii < i

Q. How to calculate basicity and acidity of a compound?

Q. The correct order of acidity for the following compounds is

1. I > II > III > IV
2. III > I > II > IV
3. III > IV > II > I
4. I > III > IV > II

Q. Convert ethanoic acid to propanone.

Q. What are different distinguish test in organic chemistry in 12

Q. Which of the following acids has the smallest dissociation constant

1. $BrC{H}_{2}C{H}_{2}COOH$
2. $C{H}_{3}CHBrCOOH$
3. $C{H}_{3}CHFCOOH$
4. $FC{H}_{2}C{H}_{2}COOH$

Q. Arrange acidic strength of benzoic acid in decreasing order.

1. I > II > III > IV
2. II > IV > III > I
3. IV > III > II > 1
4. I > III > IV > II

Q.

Arrange the following compounds in increasing order of their property as indicated :

Acetaldehyde, acetone, di-tert-butyl ketone, methyl torl-butyl ketone (reactivity towards HCN).

$C{H}_{3}C{H}_{2}CH\left(Br\right)COOH,C{H}_{3}CH\left(Br\right)C{H}_{2}COOH,(C{H}_3{)}_{2}CHCOOH,C{H}_{3}C{H}_{2}C{H}_{2}COOH\{\left(acidstrength\right)\}$

Benzoic acid, 4 - nitrobenzoic acid, 3, 4 - dinitro benzoic acid, 4 - methoxy benzoic acid (acid strength).

Q.

Does higher electronegativity mean stronger acid?

Q.

What is esterification?

Q. The first ionisation constant of maleic acid is higher than fumaric acid because

1. Fumaric acid shows intermolecular H-bonding
2. Fumaric acids shows intramolecular ionic bonding
3. Maleic acid is tribasic acid
4. Maleic acid shows intramolecular H-bonding

Q. Arrange the given carboxylic acids in the increasing order of their acidities:

1. Acetic acid < formic acid < oxalic acid
2. None of the above
3. Oxalic acid < formic acid < acetic acid
4. Oxalic acid < acetic acid < formic acid

Q.

Why Aniline is meta-directing?

Q. Which reagent cannot be used to prepare an alkyl chloride from an alcohol?

1. $HCl+\text{anhyd.}ZnC{l}_2$
2. $NaCl$
3. $PC{l}_5$
4. $SOC{l}_2$

Q.

Give a balanced chemical equation for the following:
Action of conc. nitric acid on sulphur.

Q.

Consider the acidity of carboxylic acids i.Ph - COOH ii. o - NO₂ C₆H₄COOH iii. p - NO₂ C₆H₄COOHiv. m - NO₂ C₆H₄COOH which of the following order is correct

1. i > ii > iii >iv
2. ii >iv> iii > I
3. ii > iii >iv> I
4. ii >iv> I > iii

Q. The correct order of acidic and basic strength for the following pair of compounds should be?

1. (I) < (II)
2. (III) > (IV)
3. (V) < (VI)
4. (VII) > (VIII)

Q. Arrange oxalic acid, succinic acid and adipic acid in the increasing order of their acidity:

1. Oxalic acid < succinic acid < adipic acid
2. Oxalic acid < adipic acid < succinic acid
3. Adipic acid < succinic acid < oxalic acid
4. None of the above

Q.

Why Nitric Acid Is Stronger Than Nitrous Acid?

Q.

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

$\mathrm{NaCl}$

Q. Hydrolysis of benzamide gives P. P is:

1. Benzene
2. Benzoic acid
3. Phenol
4. Benzaldehyde

Q.

Write balanced chemical equation for the following:
Action of dilute Sulphuric acid on Sodium sulphite.

Q. Find the strongest acid among the following compounds.

1. 
2. 
3. 
4. 

Q. The correct order of acid strength for the following carboxylic acids is:

1. $I>III>II>IV$
2. $III>II>I>IV$
3. $I>II>III>IV$
4. $II>I>IV>III$

Q. The conjugate base of HI is:

1. 
2. 
3. 
4.