A mixture of SO 3- SO 2 and O 2 gases is maintained in a 10-0 L flask at a temperature at which equilibrium constant K C fo the reaction 2 SO 2 g - O 2 g - 2 SO 3 g is 100Then choose the correct statements -A- If the number of mole of SO 2 and SO 3 in flask are equal- then 0-1 moles of O 2 are presentB- If the number of mole of SO 2 and SO 3 in flask are equal- then 0-4 moles of O 2 are presentC- If the number of moles of SO 3 in the flask is twice the number of mole of SO 2- then 0-4 moles of O 2 are presentD- If the number of moles of SO 3 in the flask is twice the number of mole of SO 2- then 0-1 moles of O 2 are present

168

You visited us 168 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Characteristics of Equilibrium Constant

A mixture of ...

Question

A mixture of $S O_{3}$ , $S O_{2}$ and $O_{2}$ gases is maintained in a $10.0 L$ flask at a temperature at which equilibrium constant $K_{c}$ fo the reaction
$2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g)$ is $100$
Then choose the correct statements :

If the number of mole of

S O_{2}

and

S O_{3}

in flask are equal, then

0.1

moles of

O_{2}

are present

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

If the number of mole of

S O_{2}

and

S O_{3}

in flask are equal, then

0.4

moles of

O_{2}

are present

No worries! We‘ve got your back. Try BYJU‘S free classes today!

If the number of moles of

S O_{3}

in the flask is twice the number of mole of

S O_{2}

, then

0.4

moles of

O_{2}

are present

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

If the number of moles of

S O_{3}

in the flask is twice the number of mole of

S O_{2}

, then

0.1

moles of

O_{2}

are present

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct options are
A If the number of mole of $S O_{2}$ and $S O_{3}$ in flask are equal, then $0.1$ moles of $O_{2}$ are present
C If the number of moles of $S O_{3}$ in the flask is twice the number of mole of $S O_{2}$ , then $0.4$ moles of $O_{2}$ are present
The given equilibrium is
$2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g) K_{c} = \frac{[S O_{3}]^{2}}{[S O_{2}]^{2} [O]^{2}} . . . (i)$
$If [S O_{3}] = [S O_{2}] Then K_{c} = \frac{1}{[O_{2}]} [O_{2}] = \frac{1}{K_{C}} = \frac{1}{100} = 0.01 {mol L}^{- 1}$
$Total moles of O_{2} present = 0.01 \times 10 = 0.1 m o l e s$
Volume of vessel is $10 L$

When $[S O_{3}] = [S O_{2}]$
$Then K_{c} = \frac{[S O_{2}]^{2}}{[S O_{2}]^{2} [O]^{2}} from equation (i)$
$100 = \frac{4}{[O_{2}]} [O_{2}] = \frac{4}{100} = 0.04 {mol L}^{- 1}$
$Total moles of O_{2} in vessel at equilibrium = 0.04 \times 10 = 0.4 mol$

Suggest Corrections

Similar questions

Q. A mixture of

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

and

O_{2}

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}

and

{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. A mixture of

S O_{3} . S O_{2}

and

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)

is 100

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

At equilibrium.
a) If no. of mole of

S O_{3}

and

S O_{2}

in flask are same, how many mole of

O_{2}

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

O_{2}

are present?

Q. Homogeneous equilibrium :

K_{c}

is gaseous system
A mixture of

S O_{3}, S O_{2}

and

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}

and

S O_{2}

in flask are same, how many mole of

O_{2}

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

O_{2}

are present?

Q. In the following equilibrium taking place at

298 K

5 L

flask, moles of

S O_{2}

and

S O_{3}

are equal at equilibrium.

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

K_{C} = 5

Thus number of moles of

O_{2} (g)

at equilibrium are_________.

Q. 5 moles of

S O_{2}

and 5 moles of

O_{2}

react in a closed vessel. At equilibrium 60% of the

S O_{2}

is consumed. The total number of gaseous moles (

S O_{2}

O_{2}

and

S O_{3}

) in the vessel is:

Join BYJU'S Learning Program

A mixture of SO3, SO2 and O2 gases is maintained in a 10.0 L flask at a temperature at which equilibrium constant Kc fo the reaction 2SO2(g)+O2(g)⇌2SO3(g) is 100 Then choose the correct statements :

A mixture of $S O_{3}$ , $S O_{2}$ and $O_{2}$ gases is maintained in a $10.0 L$ flask at a temperature at which equilibrium constant $K_{c}$ fo the reaction
$2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g)$ is $100$
Then choose the correct statements :