Which of the following gas is released during the reaction of aluminium with hot and concentrated sulphuric acid?

$H_{2}$

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$O_{2}$

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$S O_{2}$

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$S O_{2}$

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Solution

The correct option is C
$S O_{2}$

Aluminium liberates hydrogen on reaction with dilute sulphuric acid. Sulphur dioxide is liberated when aluminium reacts with hot concentrated sulphuric acid.

$2 A l + 3 H_{2} S O_{4} d i l u t e \to A l_{2} (S O_{4})_{3} + 3 H_{2} ↑$

$2 A l + 6 H_{2} S O_{4} h o t a n d c o n c . s u l p h u r i c a c i d \to A l_{2} (S O_{4})_{3} A l u m i n i u m S u l p h a t e + 6 H_{2} O + 3 S O_{2} ↑$

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Similar questions

Concentrated sulphuric acid on reaction with metal produces which of the following gas?

Which of the following statement(s) is/are correct when iron reacts with concentrated sulphuric acid?

i. Hydrogen gas is released.

ii. The compound formed is ferric sulphate.

iii. Sulphur dioxide gas is released.

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