(i) With the help of equations, give an outline for the manufacture of sulphuric acid by the contact process.
(ii) What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with
(A) potassium nitrate (B) carbon? [5 MARKS]

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Solution

Each option: 2.5 MArks

(i) $S + O_{2} \to S O_{2}$
$2 S O_{2} + O_{2} V_{2} O_{5} / P t - ------ \to 400 - 450^{\circ} C 2 S O_{3}$
$S O_{3} + H_{2} S O_{4} \to H_{2} S_{2} O_{7}$
$H_{2} S_{2} O_{7} + H_{2} O \to 2 H_{2} S O_{4}$

(ii) When heated with potassium nitrate conc. sulphuric acid shows its non-volatile nature.
$K N O_{3} + H_{2} S O_{4} (c o n c .) b e l o w 200^{\circ} C - ------ \to K H S O_{4} + H N O_{3}$
With carbon - oxiding nature
$C + 2 H_{2} S O_{4} (c o n c .) h e a t - - \to C O_{2} + 2 H_{2} O + 2 S O_{2}$

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Similar questions

Q. (a) When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate, what is the special feature of the apparatus used?
(b) Write the equation for the laboratory preparation of nitric acid from potassium nitrate and concentrated sulphuric acid.
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Q. Which property of sulphuric acid is shown by the reaction of concentrated sulphuric acid?
(i) Ethanol
(ii) Carbon

(c) (i) Name the process used for the large scale manufacture of sulphuric acid.
(ii) Which property of sulphuric acid accounts for its use as a dehydrating agent?
(iii) Concentrated sulphuric acid is both an oxidizing agent and non-volatile acid. Write one equation each to illustrate the above mentioned properties of sulphuric acid.

Write the equation for each of the following reactions:
(i) Sulphur is heated with concentrated sulphuric acid.
(ii) Concentrated sulphuric acid is poured over sugar.

Q. In the contact process for the manufacture of sulphuric acid give equations for the conversion of sulphur trioxide to sulphuric acid.

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(i) With the help of equations, give an outline for the manufacture of sulphuric acid by the contact process. (ii) What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with (A) potassium nitrate (B) carbon? [5 MARKS]

(i) With the help of equations, give an outline for the manufacture of sulphuric acid by the contact process.
(ii) What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with
(A) potassium nitrate (B) carbon? [5 MARKS]