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Standard XII

Chemistry

Stoichiometric Calculations

The minimum a...

Question

The minimum amount of $A g_{2} C O_{3} (s)$ required to produce sufficient oxygen for the complete combustion of $C_{2} H_{2}$ , which produces $11.2 L$ of $C O_{2}$ at STP after combustion is: $[A g = 108]$
$A g_{2} C O_{3} (s) \to 2 A g (s) + C O_{2} (g) + \frac{1}{2} O_{2} (g)$
$C_{2} H_{2} + \frac{5}{2} O_{2} \to 2 C O_{2} + H_{2} O$

276 g

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345 g

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690 g

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1380 g

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Solution

The correct option is B $345 g$
The balanced reaction given for the complete combustion of $C_{2} H_{2}$ is
$C_{2} H_{2} + \frac{5}{2} O_{2} \to 2 C O_{2} + H_{2} O$

So to produce $11.2 L$ of $C O_{2}$ , $C_{2} H_{2}$ required is $= 5.6 L = \frac{5.6}{22.4} m o l = 0.25 m o l$

Again, for complete combustion of $1 m o l o f C_{2} H_{2}$ , $\frac{5}{2} m o l O_{2} r e q u i r e d$

$∴$ For 0.25 mol of $C_{2} H_{2}$ , $\frac{5}{2} \times 0.25 m o l = 0.625 m o l o f O_{2}$ required.

The balanced chemical equation for the production of $O_{2}$ from $A g_{2} C O_{3}$ is,
$A g_{2} C O_{3} (s) \to 2 A g (s) + C O_{2} (g) + \frac{1}{2} O_{2} (g)$

So for the production of $0.625 m o l O_{2}$ minimum amount of $A g_{2} C O_{3} r e q u i r e d = 0.625 \times 2 m o l = 1.25 m o l = 1.25 \times 276 = 345 g$

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Similar questions

The minimum amount of $A g_{2} C O_{3} (s)$ required to produce sufficient oxygen for the complete combustion of $C_{2} H_{2}$ , which produces $11.2 L$ of $C O_{2}$ at STP after combustion is: $[A g = 108]$

$A g_{2} C O_{3} (s) \to 2 A g (s) + C O_{2} (g) + \frac{1}{2} O_{2} (g)$

$C_{2} H_{2} + \frac{5}{2} O_{2} \to 2 C O_{2} + H_{2} O$

Q. The minimum amount of

A g_{2} C O_{3} (s)

required to produce sufficient oxygen for the complete combustion of

C_{2} H_{2}

which produces

11.2 L

C O_{2}

at STP after combustion is:
(Molar mass of

A g = 108 g/mol

)

A g_{2} C O_{3 (s)} \to 2 A g_{(s)} + C O_{2 (g)} + \frac{1}{2} O_{2 (g)}

C_{2} H_{2} + \frac{5}{2} O_{2} \to 2 C O_{2} + H_{2} O

Q. Minimum amount of

A g_{2} C O_{3}

(s) required to produce sufficient amount of oxygen for the complete combustion of

C_{2} H_{2}

which produces 11.2 L of

C O_{2}

at STP after combustion is_________.

A g_{2} C O_{3} (s) \to 2 A g (s) + C O_{2} (g) + \frac{1}{2} O_{2} (g)

C_{2} H_{2} + \frac{5}{2} O_{2} \to 2 C O_{2} + H_{2} O

Q. The minimum amount of

A g_{2} C O_{3} (s)

required to produce sufficient oxygen for the complete combustion of

C_{2} H_{2}

which produces

11.2 L

C O_{2}

at STP after combustion is:
(Molar mass of

A g = 108 g/mol

)

A g_{2} C O_{3 (s)} \to 2 A g_{(s)} + C O_{2 (g)} + \frac{1}{2} O_{2 (g)}

C_{2} H_{2} + \frac{5}{2} O_{2} \to 2 C O_{2} + H_{2} O

Q. Minimum amount of

A g_{2} C O_{3}

(s) required to produce sufficient oxygen for the compelete combusion of

C_{2} H_{2}

which produces

11.2 l t r

C O_{2}

at S.T.P after combusion is : [Ag =108]

A g_{2} C O_{3} (s) \to 2 A g (s) + C O_{2} (g) + 1 / 2 o_{2} (g)

C_{2} H_{2} + 5 / 2 O_{2} \to 2 C O_{2} + H_{2} O

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The minimum amount of Ag2CO3(s) required to produce sufficient oxygen for the complete combustion of C2H2, which produces 11.2 L of CO2 at STP after combustion is: [Ag=108] Ag2CO3(s)→2Ag(s)+CO2(g)+12O2(g) C2H2+52O2→2CO2+H2O