Oxoacids of Sulphur

IMPORTANT

Oxoacids of Sulphur: Overview

This Topic covers sub-topics such as Sulphuric Acid, Uses of Sulphuric Acid, Preparation of Sulphuric Acid by Contact Process, Chemical Properties of Sulphuric Acid, Physical Properties of Sulphuric Acid and, Oxoacids of Sulphur and Their Structures

Important Questions on Oxoacids of Sulphur

MEDIUM
IMPORTANT

What is name of H2S2O7?

HARD
IMPORTANT

Match List-I with List-II

List-I(Oxo acids of Sulphur) List-II(Bonds)
A Peroxodisulphuric acid I Two S-OH, Four S=O, One S-O-S
B Sulphuric acid  II Two S-OH, One S=O
C Pyrosulphuric acid  III Two S-OH, Four S=O, One S-O-O-S
D Sulphurous acid IV Two S-OH, Two S=O

 

MEDIUM
IMPORTANT

What happens when KClO3 reacts with Conc.H2SO4 ?

MEDIUM
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Find the oxidation number of sulphur in Na2S2O3.

MEDIUM
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How is sulphuric acid prepared by lead chamber process ? Give its principles.

EASY
IMPORTANT

Which of the following is formed when SO3 is absorbed by concentrated H2SO4

MEDIUM
IMPORTANT

Which of the following statements is/are correct following reactions?
I. C6H12O6H2SO4conc 6C+6H2O

II. H2SO4 (dil) +ZnCO3Zn2++CO2+SO42-+H2O

III. H2SO4 (dil) +ZnZn2++H2+SO42-+4Zn

IV. 5H2SO4 (conc) +4ZnH2 S+4Zn2++4SO42-+4H2O

HARD
IMPORTANT

In which of the following oxoacid of Sulphur, S-O-O-S bond is present?

MEDIUM
IMPORTANT

The general formula for polythionic acid series is SnSO3H2, where n=3 to 6. What is the value of n for pentathionic acid acid?

EASY
IMPORTANT

Describe the favourable conditions for the manufacture of sulphuric acid by contact process.

MEDIUM
IMPORTANT

Conc. H2SO4 chars paper, wood and sugar because it removes _____ (water molecules/ cellulose) from them.

EASY
IMPORTANT

Draw the structure of the following:

H2SO3

EASY
IMPORTANT

Draw the structure of the following:

H2S2O8

EASY
IMPORTANT

Draw the structure of the following:

H2S2O7

EASY
IMPORTANT

Draw the structure of the following:

H2SO4

EASY
IMPORTANT

Draw the structure of the following:

H2SO5

EASY
IMPORTANT

Write the names and formulae of any five oxyacids of sulphur.

MEDIUM
IMPORTANT

Which of the following compounds has a lone pair of electrons at the central atom ?

H2 S2O8,H2 S2O7,H2SO3,H2SO4

MEDIUM
IMPORTANT

Sulphuric acid is a dehydrating agent. Give one example.

MEDIUM
IMPORTANT

Write one chemical reaction to show that conc. H2SO4 can act as an oxidising agent.