Table of Contents
What happens when H2SO4 reacts with HBr?
Concentrated sulfuric acid is less effective because it oxidizes HBr to bromine: 2 HBr + H2SO4 → Br2 + SO2 + 2 H2O.
What is the action of concentrated H2SO4 on a HBr B HI?
Concentrated sulphuric acid oxidises hydrobromic acid to bromine.
What happens when alkene reacts with conc H2SO4?
Alkenes react with concentrated sulfuric acid in the cold to produce alkyl hydrogensulphates. For example, ethene reacts to give ethyl hydrogensulphate. The structure of the product molecule is sometimes written as CH3CH2HSO4, b ut the version in the equation is better because it shows how all the atoms are linked up.
Why can HBr be prepared using NaBr and conc H2SO4?
All the halogen acids are colorless in nature possessing pungent suffocating smell. They are acidic in the order. HBr and HI can’t be prepared like HCl by using concentrated sulphuric acid because HBr and HI being a strong reducing agent, reduces concentrated sulphuric acid to sulphur dioxide.
Can HBr be dried with H2SO4?
Conc. H2SO4 can not be used to prepare pure HBr from NaBr.
What happens when concentrated sulfuric acid reacts with HI?
In the reaction of HI with H2SO4 the oxidation state of sulphur is changed to – 2 .
What is the action of concentrated H2SO4 on HI?
Sulphuric acid acts as an acid, an oxidising agent and as a dehydrating agent. In which way does it behave when it acts on: Formic acid.
What will be the product’s when toluene is reacted with conc hno3 and conc h2so4?
HNO3 and conc. H2SO4 is called as the nitrating mixture . Since the CH3 group shows +R effect and is o/p directing , it attacks on the benzene ring at the ortho and para positions to form a mixture of ortho-nitrotoluene and para-nitrotoluene in which para being the major product.
Can we prepare HBr by heating KBr and conc H2SO4?
Concentrated H2SO4 cannot be used to prepare HBr or HI from KBr or KI because it.