The decreasing order of the rate of alkaline hydrolysis for the following esters is:
$I: C_6H_5COOC_2H_5$
$II: p-Cl-C_6H_4COOC_2H_5$
$III: p-NO_2-C_6H_4COOC_2H_5$
$IV: p-CH_3O-C_6H_4COOC_2H_5$

$R-CO-OR' + R''OH \xrightarrow{H^{\oplus}} R-CO-OR'' + R'OH$
The above reaction is an example of:

The $pK_a$ values of four carboxylic acids are given below. Identify the weakest carboxylic acid.

Which of the following orders of acidic strength is incorrect?

The order of acidity of compounds $I-IV$ is:

Two statements are given below:
Statement $I:$ The melting point of monocarboxylic acids with an even number of carbon atoms is higher than that of acids with an odd number of carbon atoms immediately below and above it in the series.
Statement $II:$ The solubility of monocarboxylic acids in water decreases with an increase in molar mass.
Choose the most appropriate option.