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प्रश्न
Name the following:
The precipitate obtained by treating carbon with hot concentrated sulphuric acid.
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उत्तर
When carbon is treated with hot conc. Sulphuric acid then water, sulphur dioxide and carbon dioxide are formed.
\[\ce{C+ 2H2SO4 ->2H2O + 2SO2 + CO2 }\]
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संबंधित प्रश्न
Give reason for the following:
Concentrated sulphuric acid is kept in airtight bottles.
Write balanced equation for the reaction between iron and dilute sulphuric acid.
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Copper sulphate from copper.
- Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.
- In the contact process for the manufacture of sulphuric acid, sulphur trioxide is not converted to sulphuric acid by reacting it with water. Instead a two-step procedure is used. Write the equations for the two steps involved in D.
- What type of substance will liberate sulphur dioxide from sodium sulphite in step E?
- Write the equation for the reaction by which sulphur dioxide is converted to sodium sulphite in step F.
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 your observation for the following case:
Paper soaked in potassium permanganate solution is introduced into a gas jar of sulphur dioxide.
Write balanced chemical equation to show :
The behavior of H2SO4 as an acid when it reacts with magnesium.
Dilute sulphuric acid will produce a white precipitate when added to a solution of ______.
A, B and C are the chemical properties of sulphuric acid:
A. Oxidizing agent
B. Dehydrating agent
C. Non-volatile acid
Match the following equations 1 to 3 to the above chemical properties of sulphuric acid.
1. \[\ce{KNO3 + H2SO4 -> KHSO4 + HNO3}\]
2. \[\ce{C12H22O11 -> 12C + 11H2O}\]
3. \[\ce{S + 2H2SO4 -> 2H2O + 3SO2}\]
Differentiate between the following pair based on the criteria given in the bracket:
Cane sugar and hydrated copper sulphate [using concentrated H2SO4]
