Question:
Formic acid reacts with \(PCl_5\) to form
Formic acid reacts with \(PCl_5\) to form
Show Hint
Formic acid is also unique in that it can act as a reducing agent and can be oxidized by mild oxidizing agents like Tollen's reagent.
Updated On: May 2, 2026
- methyl chloride
- acetyl chloride
- formyl chloride
- carbon monoxide and hydrogen chloride
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Formic acid (HCOOH) is unique because it has a hydrogen atom directly attached to the carboxyl group.
Step 2: Detailed Explanation:
When \(PCl_5\) reacts with carboxylic acids, it generally replaces the -OH group with -Cl to form an acyl chloride (\(RCOCl\)). However, formic acid, being the simplest carboxylic acid, behaves differently. The initial product, formyl chloride (HCOCl), is unstable and decomposes immediately at room temperature to carbon monoxide (CO) and hydrogen chloride (HCl). The overall reaction is: \[ HCOOH + PCl_5 \rightarrow CO + 2HCl + POCl_3 \]
Step 3: Final Answer:
Formic acid reacts with \(PCl_5\) to give CO and HCl, option (D).
Formic acid (HCOOH) is unique because it has a hydrogen atom directly attached to the carboxyl group.
Step 2: Detailed Explanation:
When \(PCl_5\) reacts with carboxylic acids, it generally replaces the -OH group with -Cl to form an acyl chloride (\(RCOCl\)). However, formic acid, being the simplest carboxylic acid, behaves differently. The initial product, formyl chloride (HCOCl), is unstable and decomposes immediately at room temperature to carbon monoxide (CO) and hydrogen chloride (HCl). The overall reaction is: \[ HCOOH + PCl_5 \rightarrow CO + 2HCl + POCl_3 \]
Step 3: Final Answer:
Formic acid reacts with \(PCl_5\) to give CO and HCl, option (D).
Was this answer helpful?
0
0
Top MET Chemistry Questions
- Which of the following product is formed in the reaction $ CH_3MgBr {->[(i)CO_2][(ii)H_2O]} ? $
- Ethyl chloride is converted into diethyl ether by:
- Correct order of reactivity:
- A group of 13 element if added in small amounts to Ge, then the type of semiconductor formed is
- Consider the following statements I. Repulsive forces are significant when the molecules are close together on average. II. Attractive intermolecular forces are important when the molecules are fairly close together but not necessarily touching. III. Attractive forces are ineffective when the molecules are for apart. Select correct statements.
View More Questions
Top MET Organic Reactions Questions
- Which of the following is most acidic?}
- Wurtz reaction involves the reduction of alkyl halide with
- Dry distillation of calcium benzoate gives
- Which one of the following reacts with Grignard reagent to form an addition product which can be hydrolysed to a carboxylic acid?
- Vinegar is dilute aqueous solution of
View More Questions
Top MET Questions
- A coil of 100 turns and area $2 \times 10^{-2}m^2 $ is pivoted about a vertical diameter in a uniform magnetic field and carries a current of 5A. When the coil is held with its plane in north-south direction, it experiences a couple of 0.33 Nm. When the plane is east-west, the corresponding couple is 0.4 Nm, the value of magnetic induction is [Neglect earth's magnetic field]
- $\int\limits_{0}^{8}| x -5| d x$ is equal to
- Radiation, with wavelength 6561 $?$ falls on a metal surface to produce photoelectrons. The electrons are made to enter a uniform magnetic field of $3 \times 10^{-4} T$. If the radius of the largest circular path followed by the electrons is 10 mm, the work function of the metal is close to :
- In intrinsic semiconductor at room temperature number of electrons and holes are
- Which of the following product is formed in the reaction $ CH_3MgBr {->[(i)CO_2][(ii)H_2O]} ? $
View More Questions