In which of the following pairs, both members liberate methane gas on reaction with water?

M g_{2} C_{3}

and

C a C_{2}

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M g_{2} C_{3}

and

A l_{4} C_{3}

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B e_{2} C

and

C a C_{2}

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B e_{2} C

and

A l_{4} C_{3}

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Solution

The correct option is D $B e_{2} C$ and $A l_{4} C_{3}$
Below are the reactions:
$A l_{4} C_{3} + 12 H_{2} O ⟶ 4 A l (O H)_{3} + 3 C H_{4}$
$B e_{2} C + 4 H_{2} O ⟶ 2 B e (O H)_{2} + C H_{4}$
$C a C_{2} + 2 H_{2} O ⟶ C a (O H)_{2} + C_{2} H_{2}$
$M g_{2} C_{3} + 4 H_{2} O ⟶ 2 M g (O H)_{2} + C_{3} H_{4}$

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Similar questions

B e_{2} C, C a C_{2}, M g_{2} C_{3}, A l_{4} C_{3}, C H_{4},

C a C_{2}, A l_{4} C_{3} a n d M g_{2} C_{3}

H_{2} O

25^{o} C .

C a C_{2} (s) + 2 H_{2} O (l) \to C a (O H)_{2} (s) + C_{2} H_{2} (g)

A l_{4} C_{3} (s) + 12 H_{2} O (l) \to 4 A l (O H)_{3} (s) + 3 C H_{4} (g)

M g_{2} C_{3} (s) + 4 H_{2} O (l) \to 2 M g (O H)_{2} (s) + C H_{3} - C \equiv C H (g)

Which is not obtained when metal carbides react with H₂O?

S i C, C a C_{2}, B e_{2} C, A l_{2} C_{6}, A l_{4} C_{3}, B_{4} C

Which of the following on hydrolysis can give methane

A) $A l_{4} C_{3}$ B) $B e_{2} C$ C) Ca $C_{2}$ D) $C H_{3} M g C l$

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