What chemical tests are appropriate to identify Butanoic acid, Propanal and 2-methyl propan-2-ol?

Firstly, to identify butanoic acid, adding a small amount of NaHCO3 or any metal carbonates would allow effervescence tobe produced. The effervescence produced is CO2 . To make sure the gas is CO2, simply bubble the gas through limewater and if it goes cloudy, it indicates that the gas is CO2.and a carboxylic acid group is present. Secondly, to test for propanal, add Tollen's Reagent to the sample and the result will be that a silver mirror is produced. Indicates that an aldehyde group is present. Finally, to test for 2- methyl propan-2-ol, heat the sample under reflux with acidified potassium dichromate. Here, there will be no colour change and hence will remain orange. This will show that the sample is a tertiary alcohol.

AI
Answered by Athena I. Chemistry tutor

11021 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

For the equilibrium reaction PCl5(g) (equilibrium arrow)-> PCl3(g) + Cl2(g) explain the effect of increasing the concentration of Chlorine gas using the equilibrium constant.


How do you calculate the pH of a weak acid?


What is the electronic configuration of Chlorine and of a chloride ion and explain why Chlorine is 'happiest' as a chloride ion.


Suggest why the concentration of sodium hydroxide in a solution slowly decreases when left open to air


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences