C3.5 Flashcards
What is the symbol equation for making ammonia?
N2 + 3H2 <=> 2NH3
What is the yield?
The predicted amount of product that can be formed
What effect does increasing the pressure have on the rate of reaction?
It increase the rate of reaction in the forward direction because increasing the pressure favours the direction of reaction that produces the least number of molecules
What affect does a lower temperature have on a reaction?
Exothermic reaction is increased
What affect does a higher temperature have on a reaction?
Endothermic reaction is increased
What affect does a low temperature when making ammonia have on the yield and rate of reaction?
Low temperature = high yield, low rate of reaction
What affect does a high temperature when making ammonia have on the yield and rate of reaction?
High temperature = low yield, high rate of reaction
What affect does a low pressure when making ammonia have on the yield and rate of reaction?
Low pressure = low yield, low rate of reaction
What affect does a high pressure when making ammonia have on the yield and rate of reaction?
High pressure = high yield, high rate of reaction
What catalyst is used in making ammonia?
Iron
What pressure is used in making ammonia?
200 atmospheres
What temperature is used in making ammonia?
450 degrees Celsius
What is equilibrium?
When reactions occur at the same rate in each direction
