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Limiting Reagent or Reactant

When a mixtur...

Question

When a mixture containing $10$ moles of $S O_{2}$ and $15$ moles of $O_{2}$ is passed over catalyst, $8$ moles of $S O_{3}$ is formed. How many moles of $S O_{2}$ and $O_{2}$ did not enter into combination respectively?

A

2, 11

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B

4, 22

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C

11, 2

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D

22, 4

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Solution

The correct option is A $2, 11$
$2 S O_{2} + O_{2} ⇌ 2 S O_{3}$
2 moles of $S O_{2}$ will react with 1 mole of $O_{2}$ to form 4 moles of $S O_{3}$ .
8 moles of $S O_{2}$ will react with 4 moles of $O_{2}$ to form 8 moles of $S O_{3}$ .
Hence, $10 - 8 = 2$ moles of $S O_{2}$ and $15 - 4 = 11$ moles of $O_{2}$ did not enter into the combination respectively.

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Similar questions

S O_{2}

and 15 moles of

O_{2}

were passed over a catalyst to produce 8 moles of

S O_{3}

. The ratio of moles of

S O_{2}

S O_{3}

Q. When a mixture of 10 moles of

S O_{2}

and 16 moles of

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were passed over a catalyst, 8 moles of

S O_{3}

were formed at equilibrium. The number of moles of

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remaining unreacted were:

Q. A mixture of

S O_{3} . S O_{2}

O_{2}

gases is maintained at equilibrium in 10 litre flask at a temperature at which

K_{c}

for the reaction,

2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g)

m o l^{- 1} l i t r e

At equilibrium.
a) If no. of mole of

S O_{3}

S O_{2}

in flask are same, how many mole of

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are present?
b) If no. of mole of

S O_{3}

in flask are twice the no.of mole of

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. how many mole of

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Q. A mixture of

{S O}_{3}, {S O}_{2}

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gases is maintained in a

10 L

flask at a temperature at which the equilibrium constant for the reaction is

100

and the reaction is,

2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g)

.
(i) If the number of moles of

{S O}_{2}

{S O}_{3}

in the flask are equal, how many moles of

O_{2}

are present?
(ii) If the number of moles of

{S O}_{3}

in the flask is twice the number of moles of

{S O}_{2}

, how many moles of oxygen are present?

Q. Homogeneous equilibrium :

K_{c}

is gaseous system
A mixture of

S O_{3}, S O_{2}

O_{2}

gases is maintained at equilibrium in

10

litre flask at a temperature at which

K_{c}

for the reaction,

2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{2} (g)

100 m o l^{- 1}

litre. At equilibrium.
(a) If no. of mole of

S O_{3}

S O_{2}

in flask are same, how many mole of

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are present?
(b) If no. of mole of

S O_{3}

in flask are twice the no. of mole of

S O_{2}

, how many mole of

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