Question

A mixture containing SO2 and O2 gas in equal mass in a vessel of 10 litre at 27 degree Celsius are made to react to produce maximum quantity of so3 gas
SO2 + O2 => SO3
The percentage change in pressure at the end of reaction is



Also give me the explanation​

Answer 1

Volume of flask =10 litre

(a) 2SO

2

​

+O

2

​

⇌2SO

3

​

K=100

At a x a

eqd a/10 x/10 a/10

const

K

C

​

=

(x/10)(a/10)

2

(a/10)

2

​

=100

100

1

​

=

10

x

​

⇒x=1/10

0.1 moles of O

2

​

are present .

(b) 2SO

2

​

+O

2

​

⇌2SO

3

​

At a x 2a

eq a/10 x/10 2a/10

conc

K

C

​

=

(x/10)(a/10)

2

(

10

2a

​

)

2

​

⇒

x/10

4

​

=100

x=4/10=0.4 moles of O

2

​

.