CL2 - Manufacturing Nitric Acid Flashcards
1
Q
what is Kc?
A
equilibrium constant
2
Q
How to work out Kc?
A
products/reactants
e.g. 2HBr = (HBr)^2
all units = (moldm-3) for each compound in reaction
3
Q
How does changes of concentration effect Kc?
A
Kc remains CONSTANT (Le Chatelier)
BUT ratio of prducts to reactants changes
4
Q
How does changes in temperature affect Kc?
A
DOES AFFECT Kc! - ONLY REACTION CONDDITION TO DO THIS
Rise in temperature:
exothermic = DEcrease Kc
endothermic = INcrease Kc (IN-EN)
5
Q
How do CATALYSTS affect equilibrium
A
They do no affect equilibrium position but do affect the rate
6
Q
methods to determine eq. constants
A
pH measurements
colorimeric methods
titration
