Write balanced equations for the following reactions.
(a) Combustion of $C_{2} H_{10}$ in a limited supply of oxygen to form carbon monoxide and water.
(b)The reaction of calcium carbide with water to form acetylene.
(c)The precipitation of calcium cyanamide from calcium carbide and nitrogen.
(d)Formation of hydrogen cyanide from methane and ammonia.

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Solution

a) $C_{2} H_{10} + \frac{7}{2} O_{2} \to 2 C O + 5 H_{2} O$
b) $C a C_{2} (s) + 2 H 2 O (l) \to C a (O H)_{2} (s) + C_{2} H_{2} (g)$
c) $C a C_{2} + N_{2} t^{0} C - - \to C a C N_{2} + C$
d) $2 C H_{4} + 2 N H_{3} + 3 O_{2} \to 2 H C N + 6 H_{2} O$

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(a) Calcium carbide is used for the artificial ripening of fruits. Actually the fruit ripens because of the heat evolved while calcium carbide reacts with moisture. During this reaction calcium hydroxide and acetylene gas is formed. If 200 cm³ of acetylene is formed from a certain mass of calcium carbide, find the volume of oxygen required and carbon dioxide formed during the complete combustion. The combustion reaction can be represented as below:
2C₂H₂_(g)+ 5O₂_(g) → 4CO₂_(g) + 2H₂O_(g)

(b) A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 37.
[N = 14, H = 1].

Calcium carbide is used for the artificial ripening of fruits. Actually, the fruit ripens because of the heat evolved while calcium carbide reacts with moisture. During the reaction, calcium hydroxide and acetylene gas is formed.

If 200 $c m^{3}$ of acetylene is formed from a certain mass of calcium carbide. Find the volume of oxygen required and carbon dioxide formed during the complete combustion. The combustion reaction can be represented as below:

$2 C_{2} H_{2} (g) + 5 O_{2} (g) \to 4 C O_{2} (g) + 2 H_{2} O (g)$

Q. Calcium carbids reacts with nitrogen to form a black mixture of carbon and cyanamide. This mixture, known as nitrolime, is used as:

Q. Write a balanced chemical equation when calcium carbide reacts with water.

200 c c

of acetylene is formed form a certain mass of calcium carbide. Find the volume of oxygen required and carbon dioxide formed during its complete combustion. The combustion reaction can be represented as:

2 C_{2} H_{2} (g) + 5 O_{2} (g) \to 4 C O_{2} (g) + 2 H_{2} O (g)

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a) C2H10+72O2→2CO+5H2Ob) CaC2(s)+2H2O(l)→Ca(OH)2(s)+C2H2(g)c) CaC2+N2t0C−−→CaCN2+Cd) 2CH4+2NH3+3O2→2HCN+6H2O

a) $C_{2} H_{10} + \frac{7}{2} O_{2} \to 2 C O + 5 H_{2} O$
b) $C a C_{2} (s) + 2 H 2 O (l) \to C a (O H)_{2} (s) + C_{2} H_{2} (g)$
c) $C a C_{2} + N_{2} t^{0} C - - \to C a C N_{2} + C$
d) $2 C H_{4} + 2 N H_{3} + 3 O_{2} \to 2 H C N + 6 H_{2} O$