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Question
Complete the following equations :
S + conc.HNO3 →
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Solution
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Comment, sulphuric acid is referred to as King of chemicals.
What is the name given to the salts of sulphuric acid?
Give reasons for the following:
A piece of wood becomes black when concentrated sulphuric acid is poured on it.
Give reasons for the following:
Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.
Write a balanced chemical equation for each of the following reactions :
Action of dilute sulphuric acid on sodium hydroxide.
In using sulphuric acid to prepare other acids, as mentioned above, which property of sulphuric acid is used ?
A, B, C and D summarise the properties of sulphuric acid depending on whether it is dilute or concentrated.
A = Typical acid property
B = Non-Volatile acid
C = Oxidising agent
D = Dehydrating agent
Choose the property (A, B, C or D) depending on which is relevant to each of the following :
(i) Preparation of hydrogen chloride gas
(ii) Preparation of copper sulphate from copper oxide
(iii) Action of cone, sulphuric acid on sulphur
Making use only of substances chosen from those given below:
Dilute sulphuric acid
Sodium carbonate
Zinc
Sodium sulphite
Lead
Salcium carbonate
Give the equation for the reaction by which you could obtain:
(i) Hydrogen
(ii) Sulphur dioxide
(iii) Carbon dioxide
(iv) Zinc Carbonate (two steps required).
Arrange the following as per the instruction given in the bracket:
Sulphuric acid, Phosphoric acid, Acetic acid (increasing order of number of replaceable H atoms per molecule).
Identify the following:
The element having electronic configuration 2, 8, 6.
