For a gas phase reaction, which of the quantities (I, II and III) in the energy profile diagram above are affected by decreasing the volume of the reaction vessel at constant temperature?
A - VCE - SSCE Chemistry - Question 3 - 2010 - Paper 1
Question 3
For a gas phase reaction, which of the quantities (I, II and III) in the energy profile diagram above are affected by decreasing the volume of the reaction vessel at... show full transcript
Worked Solution & Example Answer:For a gas phase reaction, which of the quantities (I, II and III) in the energy profile diagram above are affected by decreasing the volume of the reaction vessel at constant temperature?
A - VCE - SSCE Chemistry - Question 3 - 2010 - Paper 1
Step 1
Identify how volume affects pressure and equilibrium
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
According to Le Chatelier's principle, decreasing the volume of a reaction vessel increases the pressure. The equilibrium will shift towards the side with fewer moles of gas to counteract the increase in pressure.
Step 2
Evaluate the quantities I, II, and III
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The quantities represented in the energy profile diagram typically include activation energy, enthalpy changes, and transitions states. When the volume decreases, the reaction favors the formation of products with fewer gas moles.
Step 3
Select the correct option based on the analysis
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Given that decreasing the volume impacts the activation energy and enthalpy changes, the correct option is D: none of the quantities are directly affected in terms of their numerical values, as they relate to the specific conditions of the reaction rather than the volume itself.
