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Question
Identify the following:
The element having electronic configuration 2, 8, 6.
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Solution
Sulphur
Explanation:
The atomic number of S is 16. The electronic arrangements are 2, 8, 6.
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RELATED QUESTIONS
Give reason for the following:
Red brown vapours are produced when concentrated sulphuric acid is added to hydrogen bromide.
Name the following:
Products obtained by dissolving sulphur dioxide and chlorine in water.
What would you observe in the following case?
Sulphur trioxide is dissolved in water on a large scale.
What would you observe in the following case?
100ml of 98% sulphuric acid is kept open.
How are the following conversion brought about? Give equation and condition:
Sulphur trioxide to oleum.
Give examples of the use of sulphuric acid as
An electrolyte in everyday use
Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reaction (a) to (e). Some properties may be repeated.
A. Acid
B. Dehydrating agent
C. Non-volatile acid
D. Oxidizing agent
(a) \[\ce{C12H22O11 + nH2SO4 -> 12C + 11H2O + nH2SO4}\]
(b) \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]
(c) \[\ce{NaCl + 2H2SO4 -> NaHSO4 + HCl}\]
(d) \[\ce{CuO + 2H2SO4 -> CuSO4 + H2O}\]
(e) \[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]
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).
Name the following:
A sulphate insoluble in water.
Sulphuric acid is manufactured by the contact process.
Name the chemical used to dissolve SO3 and also name the product formed. Give all the main reactions to this process.
