Question

At certain temperature and total.pressure of 10^5Pa iodine vapour contain 40% by volume of I atom
I2 (g)》2I (g)

Answer 1

Answer:

Partial pressure of I atoms= P1 = $40/100$ x P total

= 40/100 x 10⁵

= 4 x 10⁴ Pascals

Partial pressure of I₂ molecules,

PI₂ = $60/100$ x P total

= 60/100 x 10⁵

= 6 x 10⁴ pascals

now for the given reaction,

Kp = (pI)²/ PI₂

= (4 x 10⁴)² / 6 x 10⁴

= 2.67 x 10⁴ Pascals