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प्रश्न
Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the copper.
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उत्तर
When sulphuric acid reacts with copper, it forms copper sulphate and sulphur dioxide.
\[\ce{Cu + 2H2SO4 -> CuSO4 + 2H2O + SO2↑}\]
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संबंधित प्रश्न
Give reasons for the following:
Sulphuric acid forms two types of salts with NaOH.
Copy and complete the following table:
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
What would you observe in the following case?
100ml of 98% sulphuric acid is kept open.
Give reason for the following:
When diluting concentrated sulphuric acid, the acid should be added to water and not water to the acid.
How are the following conversion brought about? Give equation and condition:
Sulphur trioxide to oleum.
Fill in the blank with appropriate word/words :
Oil of Vitriol is ___________
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).
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.
Which property of sulphuric acid accounts for its use as a dehydrating agent?
