Oxygen is more electronegative than sulphur yet H2S is acidic while H2O is neutral. This is because.
Water is highly associated compound
H-S bond is weaker than H2O is neutral.
H2S is a gas while H2O is a liquid
The molecular weight of H2S is more than that of H2O
Bond angle in O3 molecule is
108o29'
108o28'
116o90'
120o
When a lead storage battery is discharged
SO2 is evolved
Lead sulphate is consumed
Lead is formed
H2SO4 is consumed
Platinised asbestos used as a catalyst in the manufacture of H2SO4 is an example of
Heterogenous catalysis
Autocatalysis
Homogeneous catalysis
Induced catalysis
Which of the following isotopes is present in largest amount?
O16
O17
O18
All in equal amounts
Which metal sticks to a glass plate after treatment with ozone
Silver
Mercury
Copper
Lead
In Kipp's apparatus, H2S is prepared
Continuously
By FeS + Conc. H2SO4
By FeS + dil. H2SO4
By Fe + dil. H2SO4
The reaction in the Kipp's apparatus stops when the outlet is closed from the top because
The acid become weak
Gas pressure breaks the contact between FeS and the acid
Gas starts coming out
Protective film is formed on FeS
H2SO4 has very corrosive action on skin because
It reacts with proteins
It acts as dehydrating agent and absorption of water is highly exothermic
It acts as oxidizing agent
It has bleaching action
Number of hydroxyl groups present in pyrosulphuric acid is
3
4
6
2
