Chemistry
Give reasons for the following.
(a) Sulphuric acid forms two types of salts with NaOH.
(b) A piece of wood becomes black when concentrated sulphuric acid is poured on it.
(c) Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.
Related Questions
Copy and complete the following table relating to an important industrial process and it's final output.
Name of process Inputs Catalyst Equation for catalyzed reaction Output Contact Process Sulphur dioxide + oxygen Copy and complete the following table:
Column 1
Substance reacted with acidColumn 2
Dilute or concentrated acidColumn 3
GasHydrogen Carbon dioxide Only chlorine Why is water not added to concentrated H2SO4 in order to dilute it?
Why is:
(a) Concentrated sulphuric acid kept in air-tight bottles?
(b) H2SO4 is not used as a drying agent for H2S?
(c) Sulphuric acid used in the preparation of HCl and HNO3? Give equations in both cases.