Question

N2o5 gives 2no2+1/2o2.this reaction is of first order.given that k=5×10-4s-1.if initial concertrain of n2o5 is 0.25mol l-1,find a time for when the concentration of no2 is 0.20 mol l-1?​

Answer 1

Explanation:

N

2

O

5

→2NO

2

+

2

1

O

2

t=0 1.24×10

−2

t=60 0.2×10

−2

For first order reaction ,

λ=

T

1

ln(

Cl

Co

)

=

60

1

×ln(

0.20

1.24

)

⇒ λ = 0.0304 mol L

−1

min

−1