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प्रश्न
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).
उत्तर
(i) Zinc reacts with dilute sulphuric acid to evolve hydrogen.
\[\ce{Zn + H2SO4 → ZnSO4 + H2 ^}\]
(ii) Sodium sulphite reacts with dilute sulphuric acid to give sulphur dioxide.
\[\ce{Na2SO3 + H2SO4 → Na2SO4 + H2O + SO2 ^}\]
(iii) Sodium carbonate reacts with dilute sulphuric acid to give carbon dioxide.
\[\ce{Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2 ^}\]
(iv) Zinc reacts with dilute sulphuric acid to form zinc sulphate, which in reaction with sodium carbonate forms zinc carbonate.
\[\ce{ Zn + H2SO4 → ZnSO4 + H2 ^}\]
\[\ce{ZnSO4 + Na2CO3 → ZnCO3 + Na2SO4}\]
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संबंधित प्रश्न
What is the name given to the salts of sulphuric acid?
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Ferrous sulphate solution and ferric sulphate solution. (Using sodium hydroxide solution)
How does sulphuric acid occur in nature?
Name the following:
Products obtained by dissolving sulphur dioxide and chlorine in water.
Give reason for the following:
Concentrated sulphuric acid must be stored in airtight bottles.
How are the following conversions brought about? Give equation and condition:
Sulphur trioxide to sulphur acid.
Choose the current answer from the options given below :
Which of the following gas dissolves in H2SO4 to give alum?
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) \[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]
HCl, HNO3 and H2SO4 are formulae of three compounds. Which of these compounds has the highest boiling point and which has the lowest?
Write a balanced chemical equation when hot and concentrated sulphuric acid reacts with the following:
Sulphur
