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प्रश्न
Give two balanced reactions of the type to show the following property of sulphuric acid:
Oxidising agent
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उत्तर
H2SO4 is an oxidising agent.
For example, it oxidises
- Carbon to carbon dioxide.
\[\ce{C_{(s)} + 2H2SO4 -> CO2_{(g)} + 2H2O_{(l)} + 2SO2}\] - Sulphur to sulphur dioxide.
\[\ce{S_{(s)} + H2SO4 -> 3SO2_{(g)} + 2H2O_{(l)}}\]
संबंधित प्रश्न
Why is water not added to concentrated H2SO4 in order to dilute it?
Give two balanced reactions of each type to show the following properties of sulphuric acid:
Hygroscopic nature
Name the following:
The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid.
Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equation for the reaction from which the folllowing gas are obtained, using dilute sulphuric acid as one of the reactant : Carbon dioxide
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Copper sulphate from copper.
A, B, C and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated. Choose the property (A, B, C or D), depending on which is relevant to each of the preparations (i) to (ii).
A. Dilute acid (typical acid properties)
B. Non-volatile acid
C. Oxidizing agent
D. Dehydrating agent
(i) Preparation of hydrogen chloride.
(ii) Preparation of ethane from ethanol
(iii) Preparation of copper sulphate from copper oxide.
State one appropriate observation of the following:
Concentrated sulphuric acid is added dropwise to a crystal of hydrated copper sulphate.
Give one equation to show the following property of sulphuric acid:
Dehydrating property
Write the observation for the following:
Decomposition of bicarbonates by dil. H2SO4.
\[\ce{2NaHCO3 + H2SO4 -> Na2SO4 + 2H2O + 2CO2}\]
Differentiate between the following pair based on the criteria given in the bracket:
Cane sugar and hydrated copper sulphate [using concentrated H2SO4]
