Question

When NaBr is heated with conc H2SO4 ,Br2


is produced but when NaCl is heated with


conc H2SO4, HCl is produced. Why?

Answer 1

NaCl is a volatile solid. Less volatile liquid H2SO4 displaces the more volatile sodium chloride and hence there is no changed in oxidation state. Due to this it becomes a simple displacement reaction as
NaCl + H2SO4 -->NaHSO4 +HCl
In case of NaBr, Br- acts as reducing agent fr H2SO4 and the sulphuric acid is reduced to sulphr ioxide by bromide ion which itself gets oxideised to give bromine free molecule.

2NaBr + 2H2SO4 --> NaHSO4 + Br2 + SO2 + 2H2O.

Hope this answer is helpful for you
Plz mark it as brainlist .

Answer 2

Answer:

Explanation:

NaCl is a volatile solid. Less volatile liquid H2SO4 displaces the more volatile sodium chloride and hence there is no changed in oxidation state. Due to this it becomes a simple displacement reaction as

NaCl + H2SO4 -->NaHSO4 +HCl

In case of NaBr, Br- acts as reducing agent fr H2SO4 and the sulphuric acid is reduced to sulphr ioxide by bromide ion which itself gets oxideised to give bromine free molecule.

2NaBr + 2H2SO4 --> NaHSO4 + Br2 + SO2 + 2H2O.