this is the amount of disorder in a system( reaction vessel such as a test tube) , it is normlly favourable to increase the amount of entropy. Entropy measures the amount of energy quanta and microstates that are available in system.
Entropy is increased by 3 factors the weight of their effects are the order in which they are stated
So how do we work out the value of entropy?
This is done using three equations
S system= S Products -S Reactants
S surrounding= -delta H/Tempurature in Kelivn
S total = S Surrounding+S System
temp = delta H/ S system
In the exam ( for edexcel anyway) you will be given a data book , the entropy data will be in this book be sure that you are familiar with it! and that you read it correctly!
lets practice this
CaO(s) + H2O(l) = Ca(OH)2 (s)
to work out we look in the data book
Ca(OH)2 = 83.4
H2O = 69.9
83.4- 69.9-39.7 =…