Question

Given reaction is $2X\left(g\right)+Y\left(g\right)\rightleftharpoons 2Z\left(g\right),\Delta H=+80\text{kcal}.$ Which combination of pressure and temperature gives the highest yield of $Z$ at equilibrium?

• A.
  $1000\text{atm}$ and $500{}^{o}C$
  
• B. $500\text{atm}$ and $500{}^{o}C$
• C. $1000\text{atm}$ and $100{}^{o}C$
• D. $500\text{atm}$ and $100{}^{o}C$

Answer 1

The correct option is A

$1000\text{atm}$ and $500{}^{o}C$

The reaction takes place with a reduction in number of moles (volume) and is endothermic. So high pressure and high temperature favour the reaction in forward direction. This is in accordance with Le-Chatelier's principle.