Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  2. Chemistry OCR A
  3. Question bank

Rates, equilibrium and pH

EasyMediumHard
1234567891011121314151617181920212223242526272829
Question 6

The contact process involves the reversible oxidation of sulfur dioxide to sulfur trioxide as shown below.

2SO2(g)+O2(g)⇌2SO3(g) 2\text{SO}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{SO}_3\text{(g)} 2SO2​(g)+O2​(g)⇌2SO3​(g)

In an equilibrium mixture, the partial pressure of SO2\text{SO}_2SO2​ is 2.0 atm2.0\text{ atm}2.0 atm and the partial pressure of O2\text{O}_2O2​ is 5.0 atm5.0\text{ atm}5.0 atm. The total pressure of the system at equilibrium is 11.0 atm11.0\text{ atm}11.0 atm.

What is the value of KpK_{\text{p}}Kp​, in atm−1\text{atm}^{-1}atm−1?

0.2000.2000.200

0.4000.4000.400

0.8000.8000.800

1.601.601.60

Rates, equilibrium and pH Questions

  1. A Level
  2. /Chemistry
  3. /Rates, equilibrium and pH