Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 3: Problem 150

Which of the following will decompose \(\mathrm{NaHCO}_{3}\) solution with the liberation of \(\mathrm{CO}_{2}\) gas? (a) phenol (b) p-nitrophenol (c) \(\mathrm{p}\) -cresol (d) \(2,4,6\) -trinitrophenol

Short Answer

Expert verified
The compound that will decompose NaHCO₃ solution and liberate CO₂ gas is (d) 2,4,6-trinitrophenol. This is because it has the highest acidity among the given compounds (phenol, p-nitrophenol, p-cresol, 2,4,6-trinitrophenol), allowing it to provide a proton (H⁺) and react with NaHCO₃ to release CO₂ gas. Reaction: \(\mathrm{C}_{6}\mathrm{H}_{2}(\mathrm{NO}_{2})_{3}\mathrm{OH} + \mathrm{NaHCO}_{3} \rightarrow \mathrm{C}_{6}\mathrm{H}_{2}(\mathrm{NO}_{2})_{3}\mathrm{O}^{-}\mathrm{Na}^{+} + \mathrm{H}_{2}\mathrm{O} + \mathrm{CO}_{2}\)

Step by step solution

01

Understanding the given compounds and their acid-base nature

First, let's understand each compound and determine their acid-base nature: (a) Phenol: (\(\mathrm{C}_{6}\mathrm{H}_{5}\mathrm{OH}\)) has moderately acidic nature due to the presence of an \(\mathrm{OH}\) group. (b) p-nitrophenol: has a similar structure as phenol but has a nitro group (\(\mathrm{NO}_{2}\)) at the para position, increasing the acidity. (c) p-cresol: similar to phenol but with a methyl group (\(\mathrm{CH}_{3}\)) at the para position, which makes it slightly less acidic than phenol. (d) 2,4,6-trinitrophenol: has a phenol core with three nitro groups at the ortho and para positions, making it more acidic (a strong acid).
02

Comparing the relative acidity of the compounds

Based on the information above, the ranking of the compounds in terms of acidity is: 2,4,6-trinitrophenol > p-nitrophenol > phenol > p-cresol Higher-ranking acids can provide protons to react with the NaHCO₃ and liberate CO₂.
03

Choosing the compound to decompose NaHCO₃

From the ranking, 2,4,6-trinitrophenol has the highest acidity among the given compounds. Thus, 2,4,6-trinitrophenol would be the compound to liberate CO₂ gas by decomposing NaHCO₃. The reaction can be represented as: \(\mathrm{C}_{6}\mathrm{H}_{2}(\mathrm{NO}_{2})_{3}\mathrm{OH} + \mathrm{NaHCO}_{3} \rightarrow \mathrm{C}_{6}\mathrm{H}_{2}(\mathrm{NO}_{2})_{3}\mathrm{O}^{-}\mathrm{Na}^{+} + \mathrm{H}_{2}\mathrm{O} + \mathrm{CO}_{2}\) The correct answer is: (d) 2,4,6-trinitrophenol.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

$$ \mathrm{HCHO}+\mathrm{HCl} \stackrel{\mathrm{ZnCl}_{2}}{\longrightarrow} \mathrm{P} $$ The organic compound P formed in the above reaction is

The C-O bond length in phenol is shorter compared to C-O bond length in alcohols. This is due to (a) the sp \(^{2}\) nature of the carbon of the phenol. (b) the delocalization of the electron density from the ring to the more electronegative oxygen. (c) the dipole distribution of the \(\mathrm{C}-\mathrm{O}\) bond in phenol with the oxygen at the negative end of the dipole. (d) the acidic nature of the phenolic hydrogen.

Nitrobenzene is prepared by treating benzene with a mixture of con. \(\mathrm{HNO}_{3}\) and con. \(\mathrm{H}_{2} \mathrm{SO}_{4}\) (nitrating mixture). In the nitrating mixture, \(\mathrm{HNO}_{3}\) acts as a/an (a) base (b) acid (c) catalyst (d) oxidizing agent

The major product formed when o-cresol is treated with \(\mathrm{Br}_{2}\) in \(\mathrm{CS}_{2}\) at ice cold conditions is

The maximum number of structural isomers possible when one hydrogen atom in diphenyl methane is substituted by a chlorine atom is (a) 8 (b) 4 (c) 6 (d) 3
See all solutions

Recommended explanations on Chemistry Textbooks

The Earths Atmosphere

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Chemistry Branches

Read Explanation

Chemical Reactions

Read Explanation

Making Measurements

Read Explanation

Organic Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free